Severe diarrhea, very early pregnancy??

Not sure if it was something I ate, but this has been going on for 48 hours now. I found out I was pregnant 4 days ago, and I’m 5weeks and 2 days according to my last period. I got so sick to my stomach earlier and broke out in a sweat. The day before I was vomiting with a pretty bad headache. Not sure if this is somehow related to pregnancy, or what. Should I be concerned. I feel fine right now. No fever or anything like that.