craps, sore breasts, negative tests

Hi ladies! My husband and I have been TTC for about 9 months. We got pregnant in December and had a miscarriage when I was 6 weeks. Well I’m a pee on the stick addict and have been taking tests since 9 DPO. Well AF is due today and I’ve been having the worst cramps, super sore breasts, but negative test. Is it possible I could be pregnant and just not showing a positive just yet? Not too sure what to think since AF hasn’t shown up yet