Pregnant and periods

Abigail
I thought I might have been pregnant and then 2 days later my period hits. But I have been feeling nauseous which is not a normal period symptom for me. Also the first 2 days of my period are usually so painful that I can't move but this one it was only that painful for a few hours. My flow is normal but really I just want to know is it possible to be pregnant and have a period?