Faint positive followed by negative result

I took these 3 tests at about 2 hour intervals yesterday (10.32am, 12.30pm, 2 pm) - lines in 1 & 3 were pinker but it’s been over 24 hours now after which I’ve taken the photo. The second test I wasn’t even sure if I could see a barely visible line or was just imagining it. I decided to wait and test this morning with my first urine of the day as I read that gives the most accurate result. However I experienced a lot of stomach cramping yesterday which is not something I normally experience before my period. I was tossing and turning all night and barely got 3 hours of sleep. At 6 am this morning when I tested there was no line - I tried with 2 different tests. I tested again and 10.30 am and again no line. Today I’m 12 DPO and expecting my period in 2 days. I’m trying to be patient but am freaking out 🙈🙈