2nd cycle off BC

Wondering if anyone else has experienced this-

It’s my 2nd cycle off of BC, the first one lasted almost 50 days. For the 2nd cycle I ovulated on cd 19. Then 8-9dpo had dark brown discharge with a little bit of red blood and some dark clots. (Making the cycle only 26 days). It was light and stopped after the 2 days. Took a pregnancy test this morning at 11DPO and it was a BFN. Mid-morning today I had cramps and diarrhea, then have been nauseous/ light headed all morning.

Curious if anyone else has had these symptoms and ended up with a BFP or if it’s common to coming off of BC. Will keep testing though!