Help ladies

Brianna • 26. Married. Happy. TTC #1. 1 miscarriage, 3 failed IUIs. Male factor infertility. Starting IVF Summer 2020. Foster mama.
So, I have been testing with OPKs everyday since my last period, and I have my usual positives and then I still continue using opks until I get my
Period because my cycle can be wonky. Well my period was supposed to start yesterday and I've been having mild back pain and mild cramping but no period. I though that maybe my opks were off but it doesn't seem like it. I took HPT every other day for the last 4 days and nothing. Any advice?