OK... I had sex about a week ago.. I felt fine for awhile. A few days ago I felt dizzy and my temp felt like it was rising up. Than the night before last I started feeling sick like I was going to throw up but I didn't until tonight. My breast have been enlarging a bunch. I have been getting bad break outs. I still have not started my period. Was suppose to start today but didn't. I have been constipated and frequent urination. etc..

It would be too early to feel pregnancy symptoms only a week after sex. That doesn't mean that you're not pregnant, you very well could be. Wait until your period is at least 2 weeks late, then test using first morning urine.