We can't really tell you much with that information. How long have you been on the pill? Have you always taken it at the same time, perfectly? Becuase even so their is still a 98% chance of pregnancy.

Also, you would not be having any symptoms this soon after sex. Implantations does not occur for a few more days if I am not mistaken and no symptoms would show up untill then.

If you are worried about pregnancy even on the pill you should think about condoms or waiting untill you are ready for the consequences .

Ok well I have been taking the pill for about 3 months and before that I had taken the one where you dont have your preiod for three months. I mean I have taken it usually at precisly three but sometimes I am an hour late. Once it was about 6 hours late but I took another pill that day during my regular time. I did use a condom the first time..This is the second but in the same day. I had never heard of pre-cum so I wasnt worried until my period became iiregular and I researched alittle. He did pull out though. Maybe I am stressing? And your right. I am not ready for the consequences and am now thinking very critically. Ive decided to stay abstinant until then...Thank you for trying to help.
--distraughtone--

So, have you just switched from the 3month kind to the monthly kind? If this is the case, the switch between the different mixture of hormones in the two kinds of bc could be causing your period to be wacky. I recently switched between these two kinds of bc and my periods were a little wacky for the first couple of cycles. Also, birth control, even if you miss a day or two, is usually highly reliable. In only rare cases do people get pregnant while taking bc regularly. If you start missing pill 3 or 4 days in a row you are getting a little risky, but it sounds like you are pretty good at keeping up with them. I say chances are that you are not pregnant, however, there is always a very slight chance that you are.

One more thing... Certain medications can interfere with the effectiveness of the pill. If you have been on medication recently, it may have cancelled out the effects of the pill.

There is a very little chance of you being pregnant only 1-3% I think but if you get this nervous about having sex then perhaps use a condom as well or not have sex if you are this nervous. If I were you I would back up contraception I used a condom and i'm nearly 11 weeks pregnant