Does God communicate with Christians through dreams today? Do my dreams have spiritual significance?

Many people attach spiritual significance to disturbing dreams, but that's not the normal means by which God communicates with us.

It's true that God spoke through dreams to some people in the past, but even then, it was a rare occurrence. Hebrews 1:1-2 [1] God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets,
[2] Hath in these last days spoken unto us by his Son, whom he hath appointed heir of all things, by whom also he made the worlds;

See All... indicates that the principal way in which God communicates with people today is through Christ via the written Word that God inspired, not through visions or dreams. Additionally, the ScriptureThe divinely inspired writings of both the Old and New Testaments. The term Scripture is used in the New Testament to refer to both the Hebrew Bible (Luke 24:44-45) and the new apostolic writings accepted as inspired (2 Peter 3:16; 1 Timothy 5:18). advises Christians to be on guard against spirits (fallen angels or demons) that attempt to mislead (1 John 4:1Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.
See All...). One of the ways that they deceive people is through paranormal activities.

The BibleThe books (Greek, "biblia" ) that are acknowledged as canonical (authoritative) by the early Christian Church. It includes both the books of the ancient Hebrew prophets and those of the apostolic witnesses to Jesus Christ. talks of some dreams that are deceptive (Jeremiah 23:25-27 [25] I have heard what the prophets said, that prophesy lies in my name, saying, I have dreamed, I have dreamed.
[26] How long shall this be in the heart of the prophets that prophesy lies? yea, they are prophets of the deceit of their own heart;
[27] Which think to cause my people to forget my name by their dreams which they tell every man to his neighbour, as their fathers have forgotten my name for Baal.

See All...). Most dreams are a natural part of the sleeping state. The BibleThe books (Greek, "biblia" ) that are acknowledged as canonical (authoritative) by the early Christian Church. It includes both the books of the ancient Hebrew prophets and those of the apostolic witnesses to Jesus Christ. talks about the fleeting and unreal nature of dreams (Psalm 126:1(A Song of degrees.) When the LORD turned again the captivity of Zion, we were like them that dream.
See All...; Isaiah 29:8It shall even be as when an hungry man dreameth, and, behold, he eateth; but he awaketh, and his soul is empty: or as when a thirsty man dreameth, and, behold, he drinketh; but he awaketh, and, behold, he is faint, and his soul hath appetite: so shall the multitude of all the nations be, that fight against mount Zion.
See All...).

Ecclesiastes 5:3For a dream cometh through the multitude of business; and a fool's voice is known by multitude of words.
See All... says, "A dream comes through much activity," implying that normal dreams are natural outgrowths of the stimuli we receive in our waking hours. Dreams could come as a result of our own thoughts, what we hear others say, as well as from material we read or watch (movies or videos).

As Christians, we must guard the information that comes into our minds. If we expose our minds to violence or sexually oriented material, for example, these stimuli can cause unwanted dreams. Paul gives us excellent guidelines on how to orient our thinking in Philippians 4:8: "Finally, brethren, whatever things are true, whatever things are noble, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report, if there is any virtue and if there is anything praiseworthy—meditate on these things."

Having done all that we can to ensure that we have a healthy environment and that we think positive thoughts, we can also ask God to bless us with peaceful and restful sleep. Psalm 127:2It is vain for you to rise up early, to sit up late, to eat the bread of sorrows: for so he giveth his beloved sleep.
See All... says, "He gives His beloved sleep."

Joel did prophesy of a future time, before Jesus Christ's return, when there would be heavenly signs and "your old men shall dream dreams, your young men shall see visions" (Joel 2:28-31 [28] And it shall come to pass afterward, that I will pour out my spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions:
[29] And also upon the servants and upon the handmaids in those days will I pour out my spirit.
[30] And I will shew wonders in the heavens and in the earth, blood, and fire, and pillars of smoke.
[31] The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the LORD come.

See All...). The apostle Peter used this prophecy to help explain the special miracles that accompanied the giving of God's Spirit on the Day of Pentecost (Acts 2: 15-17). But it is clear from the New TestamentThe 27 authoritative books of the apostolic writings: the four Gospels of Christ, Acts (a history), 21 apostolic letters and the book of Revelation. example that Christians are to seek God's Word from the inspired ScripturesThe divinely inspired writings of both the Old and New Testaments. The term Scripture is used in the New Testament to refer to both the Hebrew Bible (Luke 24:44-45) and the new apostolic writings accepted as inspired (2 Peter 3:16; 1 Timothy 5:18). and sound biblical teaching, not private interpretations (2 Timothy 3:15-17 [15] And that from a child thou hast known the holy scriptures, which are able to make thee wise unto salvation through faith which is in Christ Jesus.
[16] All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:
[17] That the man of God may be perfect, throughly furnished unto all good works.

See All...; 4:2-4; 2 Peter 1:20-21 [20] Knowing this first, that no prophecy of the scripture is of any private interpretation.
[21] For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost.

See All...).