I got my period 3times last month and it hasn't came yet this month and yes im sexually active could i be pregnant?

And the question : Finding out if you are pregnant and seeing your doctor is where to start. Until that is known the possibilities are far to broad to address.

Irregular periods: One of the most common problem in gynecology that makes women to go to see a gynecologist. This happen most frequently as a result of some sort of cervical or vaginal infection or hormonal disorder . If it is one time event usually it can be cleared by itself. If it happens again see your gynecologist.