I stopped taking birth control pills in July and I had my period from July 11-16, then I missed it in August, then got it again on September 12-15, then got it again on October 16-17... do you think I may be pregnant

Have you taking a home pregnancy test? And if your having your period then most likely your not pregnant but there are some rare cases where women have had their period the whole way through but like I said it's rare...

No. You probably missed a period because you went off the pill. Going off the pill can throw off your period.

To address what brit said above. There are some women that have bleeding during pregnancy, but that bleeding isn't a period.

It's very unlikely that you're pregnant, but if you're obsessed about this, take a pregnancy test using first morning urine to be sure.

Good luck.