Positive one day, negative the next?

Kara

I finally got my BFP yesterday on a FRER and a ClearBlue Early Results Digital test - both were positive without using my first morning pee. Today I decided to test again (don’t ask why, no clue) and my digital read negative. So I tried again on a FRER and the result looks about the same as yesterday, maybe slightly darker. Did not use first morning urine with these either. Top photo shows todays test, bottom was yesterday. Both taken about 24 hours apart. Looking for some insight/opinions because the negative digital today has me really freaked out 😓 Tomorrow was my predicted period date