What is the possibility of being pregnant after take Next Choice Pill?

I had unprotected sex at about 12am on September 24th.  He pulled out a few minutes before he ejaculated on my stomach. Even though he didn't *** inside of me I am worried about pre-ejaculation.  I took the first Next Choice pill 16 hours after the incident, and the second pill at exactly 12 hours later like directed.  I should be getting my period October 11th. I am always regular. What are the chances that I could be pregnant? I am very worried

.Also, I feel bloated and my lower abdomen sometimes hurt like it would if I was PMSing, which I could be. But it still worries me.

PLEASE HELP!