Need help

I’m 15dpo today my period was expected 3 days ago and i haven’t been late even once this year. I’ve been taking the strip hcg tests (I imagine they aren’t that sensitive) and none have been noticeably positive.(I feel crazy if I think I see a line) yesterday I had cramps and was sure af was coming but today nothing at all. I’ll post a photo below of my test this morning with FMU.