Faint positives & negative digitals

Hi!

Needing so advice. I have taken 3 regular test all 3 with a faint positive. I took a digital last night and this morning and both came back not pregnant. I am 3 days late and it’s not normal for me to be late. I have felt so crampy and my boobs are so sensitive. Feeling pretty down about the negative digitals especially after seeing the light “positives”. Any suggestions?