clear BFP and now BFN??

I need your help guys! I got a faint BFP on 1/10, a clear one on 1/12 and a super dark one on 1/15. Today I took another test for a photo thing I’m doing for my husband and the line is barely there (or not even there and it’s just wishful thinking that I see something). Has this happened to someone? No bleeding and it’s now that I’m really getting symptoms - nausea, sore boobs, tiredness, bloating. I don’t understand wtf is going on...