I can't stop thinking about this?

So, I don't know if I'm pregnant or not. I've always had irregular periods, but this time was more normal so I'm hoping that it will become more regular. I noticed on the 2nd that I was ovulating, by the stuff in my panties. I had that saturday and sunday and the following wednesday. I had some sharp quick twinges in my unteral area last week, but recently nothing. Last night I felt kinda sick my cheeks were flushed and just felt sick, but never got sick. If my period is being regular I would think I should start my period on the 15th, because my last one was September 17th. Can't wait to see if my period comes or not. I hope not. What does anyone think?