I'm feeling sick and sweating a lot. I had sex 3 days ago n was supposed to ovulate the next day. Could I be pregnant?

Too early to tell. Most pregnancy symptoms - nausea, mild increased temperature, breast tenderness begin to occur 2 weeks following the ovulation. This is the time the pregnancy hormone hsg is present and turns a home pregnancy test positive. You will have to wait the 12 more days to find out if you are pregnant or not. Make sure you do not have a urinary tract infection or the flu.