Can i be pregnant ?

So i had unprotected sex on the 18th of June after that i stopped taking my birth control for 4 days and i had two weeks worth of break through bleeding after that stopped now it’s the 8th of July and I’ve experienced abdominal pain early this morning now it’s 7 and I’ve had this weird light pink bleeding? Could it be implantation ? My actual period is due to start tomorrow and I’ve never had ovulation spotting or anything before