Feel blah. Don't know what to do!!☹️😫

This is the third day and I feel like shit! I can't even keep anything down I'm so mad. I think it's a stomach virus it just came out of the blue...'my boobs are sore, I'm vomiting, stomach feels weird last period was June 4-8th and I had unprotected sex June 18-19th like what is going on and the sad part I don't know if I was ovulating or not.. I truly think it's a stomach virus..