Really scared I have AIDS

First of all I PROMISE I am NOT trolling. So please don't even ask. I hope I'm posting in the right area.

A few weeks ago I met a guy at a beat (park). We kissed and I put his penis in my mouth. He DIDN'T ejaculate. He also mentioned several times not to put my penis in his bottom area. It was an open mouth kiss and I had a cold sore on my lip. If he had AIDS is there a chance I could have got it through the sore on my lip. I'm so scared.

I have also recently come down with flu symptons.

Should I be worried?