Symptoms

My long term boyfriend and I have a long distance relationship. The last time we had sex was 9/5/14. We use the pull out method. I then got my period on 9/10/14. For about a week I've been having really bad nausea and dizziness. I've heard of women still getting their regular period for months before discovering they are pregnant. I know I should wait another 7 days until my next scheduled period, however, I've never experienced these symptoms. My diet is healthy and regular, and I'm not stressed, to my knowledge. Has anyone had their period or bleeding during pregnancy? If so, how heavy was it and how long did it last? I've been researching, but I keep getting different answers. Thanks ladies!