What do I do 😩🤦🏼‍♀️

Got off BC in November, AF started back in February. AF came 3/1-3/8. According to Glow, we BD’d 4 out of 5 days of my fertile window in March. It is now 4/6, no AF. On either cycle count, I’m between 6-8 days late. I’ve taken 2 tests, one 2 days before missed period, and another the day after AF was due which should’ve been around 16 or 17 DPO and they were both negative. I don’t want to waste another test, I’m feeling no symptoms other than some very slight back pain and my face has been breaking out. What do y’all think? Could AF just not be regulated yet after being on BC for 6 years? Should I go in for a blood test? I’m lost. First month trying. This is all new to me 😕