So I started my birth control last Sunday and I was due for my period today, I'm now a day late and the past week I've been extremely nauseous. I haven't been on my oil for over a year but when I did take it I never dealt with any of this.

I also had a little bit of sex before I started, my bf didn't ejaculate in me or even did the pull out method we just fooled around and he put it in a few times. My friends have made me nervous, I don't think I'm pregnant but is this normal for the pill to make my period late even though I've only been back on them for a week ?