What tests did you use hun?
I used the early predicting first response tests last time 3 days before AF was due and it was a BFN but then the day AF was due I got a faint positive. So it could still be a positive but your not gettting enough of the hormone yet.
Alternativly you could have a urinary infection or something, affecting your discharge and making you pee more. I got a mild bacterial infection once after having sex in the bath

and it did this.
Try again but with FMU in the morning and dont use a digital test.
Its also possibble that coming off the pill might be affecting your pre menstral symptoms. Like when Im not on the pill I get very bad period pains and sickness.
did you actually have sex around the time you would have ovulated i.e around 14 days ago, assuming you have a 28 day cycle when on the pill.