Pregnancy scare?

This is going to be a lot to explain but I decided to go to this app today to talk about something really weird going on. So I started taking birth control January of this year and a few months ago I ended up getting off of it because the hormones cause me pain, it’s a family thing. Before I started taking birth control my periods were about every two months. Since I’ve stopped birth control I had one period and it’s been 66 days with no period. I have taken 4 tests now and they all said I wasn’t pregnant. Now I’m having a really thick white discharge coming out These past two days. I’m really confused and don’t know what to do. Help?