i came off my pill 4 days ago because my menstrual cycle has messed up so don't no if i coming or going but had sex the day before my menstrual cycle started because i didn't know as haven't had one since the end of April but was taking my pill from when i had my son up until 4 days ago but did 3 tests due in April and may time but all neg and did 2 this month but again all neg could i be pregnant?