I had my period on July 16 and it ended on July 19 now I had unprotected sex two day after and since then maybe a day or two after I been feeling tired, sick to my stomic after eatting,headaches, moody and emotional and sometimes I get a bit crampy in my lower stomic and kind of feels like I have butterflyies

I took a pregnacey test about four days after sex and it came back negative so what do I do or am I pregnant

Please help

Dude. Go to the doctor!

So no idea about pregnancy huh? You can not tell four days after theou will sex. You have to wait till your next period and see if you miss it. If you miss it, you then wait a week and take a test. You can not test days after sex