TTC/Rough Time

We've been trying to conceive for a few months now. We thought we did convince about four weeks ago. That night I woke up to a gush of blood and white discharge. It's been four weeks since that happened and I only bleed for three days. But the last few days I've had a increase in appetite and increased sex drive. I've come to have a strong liking to bananas and chocolate. I don't like chocolate really but lately I can't get enough of it especially if it's with a banana. Ive also lost a ton of weight the last few months also. I dont know if I'm ovulating or if we might have a bun or if Im just pmsing