Help please. Idk what's going on

Lace

So I took a HPT 5 days ago and got a bfp (pic included FRER) then a cheap blue dye test (pic included) I took one this am and nothing BFN (no pic sry)

I'm sleeping more feeling nauseas sporadically and my Vag is super swolen and I have a yeast infection that's is super painful....any ideas what could be happenein