NOOOO!!!

Cathrine
So, I have a few questions 
1. I have severe periods. I get nausous, sometimes vomit, diarriah, severe cramping, heavy bleading, and the first day is usually the worst. 2 days ago, I passed out from the pain, and went to the hospital. Is this normal? Or do I have endometriosis. 
2. I am feeling more nauseous this period, and it was 2 days late, that has happened before though. I am reading that you can be pregnant and have your period, but it's usually lighter. My period is normal, just that one thing is prominent this time. Could I be pregnant? I haven't missed a period yet and I'm having it currently.