17 DPO, no AF and three BPNs

Hi ladies,

Guess I’m just wondering if anyone else has been through this. I took an opk on July 16th that was positive, expect that I ovulated the day or day after. My luteal phase is like clockwork- 12 days! I tested on Tuesday, Wednesday and this morning, all BPN. Interesting turn of events- crazy nausea (throwing up), headaches and extremely tired. Definitely has strayed from normal PMS symptoms. Anyone experience something like this? My mom said she also experienced late Positives and only through a blood test! Fingers crossed.