I feel you. Sometime ago I also felt the same way you are feeling right now. I was also scared of the tribulation. I may not be able to put into words all that I want to tell you but this is what God says:
"Do not be afraid of what is to come. It is meant for the wicked, scoffers, mockers, those who continue to turn their faces at Me and try to snub Me. I am a God who will not be snubbed. And for those who turned their noses at Me, I will turn My nose at them on the day of calamity. Again, I am the Lord God. Trust in Me and do not be afraid. I must bring judgment upon My house, My churches first. Many churches will feel My full wrath, for they have sown corrupted seed and I will have none of this. Many have itching ears, and on the day My calamity My ears will not itch to hear their plea. Judgment is here upon this land. Things will only get worse. I will utterly destroy this land. However, I will take care of those who serve Me. I will let their light shine and be so bright it will blind those who think they serve Me, but have lying hearts. Know, no matter how I take care of you, know it will be from Me, and as long as you are sensitive to My spirit, I will bless you greatly in this time.”
As long as you keep on seeking God everyday, you do not need to be afraid of anything. That is the ultimate revelation God has told me. I have never been more secured in my life than now. If you ask me how I changed from being terrified of the last days to eagerly anticipating the last days and His return, I would only tell you this, I am a young adult but I have learned what it means to wait upon the Lord, that is to spend every waking moment in His presence. I study His word everyday, I get on my knees every morning and pray to God and sometimes wait in silence for his presence. After I have spent time with the Lord every day, everyday he has given me full assurance that I need not be afraid because as long as I abide in HIM and never cease to seek HIM everyday he will take care of me. I believe with all my heart that I am part of the last days army that God is raising up to save more souls and to tell the world that God's judgment is not for total annihilation but for salvation.
If you have fear right now, GOD is speaking to you. He is telling you something.
Come to HIM in prayer everday. Be honest with your feelings to HIM. If you have to cry out, cry it out. Find a secret or quiet place and confess all your fears. That's what I have done.
God wants to save you. He loves you so so much. I know that because that's what He is telling me everyday.