It's unlikely that she is pregnant. Sperm would need to get into her vagina AND she's on birth control.
Hope it helps.
Calm down. Worrying won't help the situation anyway.
The chances of your gf being pregnant are very low:
- She is on the pill - you don't say which one (Most are very reliable, but nothing is 100%)
- You did not enter her, although that is not in itself enough. Sperm swim well.
- It was only pre-cum. If you have urinated since your last ejaculation, the chances of sperm being in the pre-cum is low.
However, there is always a risk.
You don't say when this happened exactly, but the morning-after pill should be taken within 72 hours (get advice - where do you live?).
How is your gf feeling about this? You need to talk. You need to support her, whatever the outcome.
I hope this helps. Let me know.
It does have side effects AND daily birth control is safer and more effective.
That is why I said get advice. (I was not advocating the morning-after pill, just giving its time-limits).
We do not know what pill she has been on. She is not on 'birth-control', but on 'acne-control', which might be a contraceptive-type formula. He only thought is was contraceptive. It might have been a very low dose pill which is not effective as a contraceptive.
Proper informed medical advice is needed for complete peace of mind. However, as I said, the risk seems to be very low.
There are a lot of people that think they need to use the morning after pill and it does have some risks. There are acne-contraceptive birth control meds so that makes sense and she can very well be protected.
Ultimately, if sperm didn't get into her vagina, she can't get pregnant.