Praying for you to come out of this depression. And good for you for getting on the right medication and acknowledging the chemical imbalance.
And I would not worry for a minute about eschatology! (End times) We have Jesus, and whatever happens, he will never leave or forsake us. (Hebrews 13:5) Your salvation does not rest on what happens at the end, but rather on God, who has saved you.
And if you are worried about a post-trib rapture, don't be. The Bible doesn't talk about a "rapture." Rather it talks about the Second Coming of Christ, and we will meet him and then return to earth with him. There is no secret snatching away of believers - making for 3 comings of Christ. As far as tribulation, I believe this happened in 70 AD when the Romans razed Jerusalem, and dispersed the Jews, along with the Christians.
Besides, we all suffer trials and tribulations in this life. Just be glad you are not a Christian in North Korea, China or under the Islamic State. They are torturing and killing Christians. So please pray for them.
I will be praying for you to find friends and fellowship, and to read the Bible and see God's truth revealed!