Back in July I took 2 bc pill packs in a row in order to avoid getting my period. I had unprotected sex at the beginning of August but the guy didn't ejaculate inside me (although there could have been pre-ejaculate).

About 2 weeks later my boobs were swollen and sore and I was feeling nauseous and dizzy for about 5 days. I was really worried that I might be pregnant. Then I got my period and it lasted 5 days and the flow was normal.

Last month my breasts were a little swollen about 10 days before my period. And I got my period on time and the flow was norma tool.
Well 2 days ago my boobs just suddenly swelled up and are starting to get sore. I felt a little nauseous and dizzy this morning. I am supposed to get my period in 10 days. Are those PMS symptoms? Is it possible to have PMS while on the pill? I never experienced any of these symptoms before taking 2 bc pill packs back to back.

I started taking the pill 8 years ago because I was having really bad PMS symptoms (a lot of nausea) for 2 weeks before my period. I feel like it's coming back again. Did I screw up my hormones?

Is it possible that I am pregnant? I did have my period twice since the "incident", and those symptoms only seem to appear about 10 days before my period and disappear the 2nd day of my period.

Any advice would be really appreciated.

Thanks.