Possible pregnancy?

So I got my period on the 10th or so what I think was my period. My “period came a little earlier than expected and it just odd. I’ve never ever had cramps, or nausea when starting or being on a period but this time was so very different. The first day (the 10th) I had really bad cramps, I was burning up, extremely nauseous and very dizzy. Day two I continued to have really bad cramps and nausea and very little bleeding, it continued on until Saturday and Saturday it seemed to stop. My period wasn’t suppose to end until Monday. My period has always lasted 6 days never less. I know this will sound weird and gross but the blood from my “period” from Wednesday- Saturday could’ve filled up one pad. Ever since Wednesday I’ve been having cramps, nausea, headaches, I’m always tired, I pee like a lot more than usual, I have dizziness, sometimes I’m really hungry and sometimes I can’t eat all. Could this been a sign of possible pregnancy?