I had an abortion 7 weeks ago, last week, i had unprotected sex &took the pill, yesterday i got my period and it's heavier than normal, should i worry?

Maybe: It sounds like you used plan B or some emergency birth control and this is not a good method of protection when compared to regular daily birth control. It has a failure rate and while most women have some bleeding a week or so after taking it, I would check a pregnancy test 2 weeks after unprotected sex. Its time to get on regular birth control as well.