Confused AF?

So I was wondering.: is it possible to be pregnant and have ur period.. I have symptom of pregnancy.: weirdly I was late 11 days and also took 3 tests all positive

But I started bleeding but it’s really not like my period. (Top it off YouTube brought this show on about people not knowing they r pregnant and they like find out at 9 month they r pregnant) could someone give me advice. And how long will this bleeding go for if it’s implant? I’m new to this please help..?