What's Wrong With Me?

Hi, my name is Gina, and I have been having some problems lately.

This has been around for about two to three weeks now. I have been feeling really nausated. I've thrown up a few times within these past three weeks. I have been getting hot and cold flashes not to mention diahrea. I've also been really tired, have had a headache, and recently picked up a sore throat.

I have not gotten my period, but this is somewhat normal because it is irregular anyways. It is only about a week late as of now.

I have not engaged in sexual intercourse at all. The only thing that I have done with my boyfriend is oral sex.

Now I've been noticing that there is tenderness in my abdomen on the one side...my left side. Sometimes I think that my abdodmen is on fire...then gurgle...tingle...and cease. I feel as if it's a bit firm but this is when I'm standing up and that might be the muscles tensing.

If there is anything that someone can give me to tell me why I have been feeling this way that would be great. I'm really worried.