Early signs...Or just Overthinking?

I had the Mirena(IUD) in for 9 years and got it removed 3 months ago and my boyfriend and I have been trying to get pregnant ever since. My periods were immediately normal, just only last 4 days instead of 7. I also have endometriosis. We had unprotected sex 3 days leading up to ovulation and I tested positive for Ovulating 2 days in a row. The first day we had unprotected sex but the second day ovulating due to being so busy with work and school we were unable to. It’s been 4 days since I ovulated and I’m having a very thick white discharge that is whiter and thicker than I’ve ever had before. I haven’t been too hungry, but I have been breaking out, more irritable & overly tired lately. Could this be an early sign of pregnancy or is it still way too early to tell? What’s the earliest you started showing signs?