What does it mean?? TMI???

Megan

I have 2 kids, my 10mo is breastfeeding. I haven’t had a period since July 2018 before I got pregnant. On the 2nd I had sex with my ex and he intentionally tried to get me pregnant so I’d stay with him/get back with him. Today I had a light clear-brown thick discharge. What could it mean? I’m really anxious and don’t really want to have another baby right now. 😔