I've Been Taking Birth Control For About 6-8 Months Now.

I've been taking birth control for about 6-8 months now. My last period was in May and then I had sex in June and July and ever since May I haven't gotten my period. I took a ovulation test in June and it was positive around the time I had sex. But I didn't get my period in June, the last time was early or mid May. My birth control was to regulate my periods so I stopped taking them in May because I was fine and now I'm not getting my periods anymore. Am I pregnant?