I stopped taking my pill and didnt get my period for a month (ive never been regular) had sex on the 3rd and got my period on the 9th chance of baby?

No, not at that time: A woman cannot get her normal period and be pregnant at the same time. However, she can get pregnant a week or two after her normal period. If she has some spotting or light bleeding that doesn't look like her normal regular period, she can check a urine pregnancy test about 3 weeks after sex (3 weeks after when conception might have happened) to see if she is pregnant.