could I be pregnant?

I had sexual intercourse 9/29, my period usually begins very lightly for 2-3 days before very heavy flow.  Light period started 10/4, sexual intercourse again on 10/6, heavy flow and period from 10/7 - 10/11.  My period came early (10/26 instead of 11/1) and only the early light phase but for 4 days and had major PMS symptoms - bloating, breast sensitivity and enlargement.    Could I be pregnant?  Which time would have caused it?

[azqtpies]

Only suggestion I would have is to test!!!!!!!!!!!! or have you dr do a beta bllod test! good luck, I hope you get the answer you are looking for!