Unprotected sex, no ejaculation, few days before ovulation?

I am 23 and I am not trying to get pregnant; that is the last thing I want right now.  I had unprotected sex with my boyfriend last night and three days ago. I am not the type of woman to do that because I don't want a child for a very long time; I always play it safe, but yesterday I was just really in the mood.  Anyway, being the hypochondriac that I am, I am very worried about becoming pregnant.  He did not ejaculate in me and did NOT pull out right before he was going to finish.  Instead, he took it out and I finished him off a different way which took him a bit.According to the ovulation calendar, I will be ovulating sometime between today and Thursday (I got my last period on December 11/12).  I know I am not ovulating yet (no discharge  or random wetness or anything like I do every month during ovulation). I do not want to take Plan B since I did two months ago (yes, I know the risks about all about that as well).I'm hoping the chances of becoming pregnant are extremely low?? I definitely learned never to do that again because I am paranoid about it.