Ok well I had sex with my girlfriend the other night...I came inside of her..What's the chances of her being pregnent?
if you are looking for an exact percentage figure ----that is not possible. There are a lot of vearables involved to calculate what her chances are. More information would be helpful.
It depends of her cycle : the closer you are to the middle of the cycle (14 days after the beginning of her last period), the highest the odds. If pregnancy is really not an option, you may consider going to the doc asap to get prescribed the "day-after pill" (must be in the 48 hours after intercourse).
Nobody can tell you what the chances are. Some people TRY to get pregnant for years and it never happens. Some people have an 'accident' one time and it happens. You should have considered that first.
If it happend within 72 hours she can get the morning after pill. (i think up to 5 days but better w/ in 24 hrs)
50% chance of being pregnant 50% of not as in either she is or she isn't. There is no way to tell until she has (or doesnt have) her period...and even then there are some women that have their period the entire pregnancy. Her fertile days can range from a week to fourteen days after her period (14 is the estimate, but not very accurate). Your sperm remains motile for up to 72 hours and she can become pregnant during that time. To avoid it in the future...... CONDOMS! USE THEM!