I'm 22.. since I was like 15 16 I started to have irregular periods I got blood tested to if somethig was wrong but it look like no.. Since the I was put on birth control pills I started to have my period back but I hated the pills made me feel very sick.. I been on n off the pills last April(2012) was the last time I had a period n pills.. (btw during each month I get crampsn my ovaries hurt really bad) well my question is can I still get pregnant?

No one can possibly answer this. Even being tested and examined you may have difficulty getting a definitive answer. If you can afford to see a good gynecologist, please do so, because you might get some explanation for your pain with something as simple as an ultrasound.