I'm on my second ever pack, still no period?

I'm on my second ever pack of pills (I started taking them last month on July 10th when my period started) and I still have yet to get a period since. I have had unprotected sex since I started. My boyfriend and I are in a long distance scenario and we got to see each other, so we just kinda went at it for a few days. I've felt kinda PMS-y, a little bloated, and my breasts are kinda tender. But not even any spotting. I'm a week and a half into my active pills on my second pack and I'm kind of starting to worry.