Could I Be Pregnant? Are of pregnancy?

Long story short, my boyfriend and I were messing around. We didn't have a condom. This was exactly one week after my period ended. We tried to have sex, he stuck the tip to my vagina opening and tried to push it in but it didn't work so we quit. If anything, the tip went in and was in for maybe 5 seconds. He wasn't hard or anything, if that helps. He did give me oral after that off and on for maybe 10 minutes and then he fingered me for about an hour. For the next 3 days after that, I have off and on stomach pains. It honestly feels like gas, and it's not a constant pain, but sometimes it is sharp for a few seconds. On the 3rd day after the incident, I took the plan B pill. My next period still isn't due for another 10 days and I'm just paranoid. My question is what do you think the chances are of pregnancy?