The only way to reliably know that you are pregnant is to take a pregnancy test, which would be most likely impossible during sex. You don't. It takes 3 days for the sperms to die inside of you and make you pregnant so you can't know if you are pregnant til after that.
Only takes a few seconds.
If you started you period, you most likely are not pregnant, but next time be more careful, either use a condom or get on birthcontrol.
only a 1% chance
Yes, only when a egg is released can you get pregnant. It's available for 24 hours.
There is a 50% chance that you are pregnant if your fiancee and you had unprotected sex, you are not on birth control and he did not pull out. If this happened twice, it is 50% likely that you are pregnant but the only way you will know for sure is by taking a pregnancy test.
You CAN get pregnant, but there is only about a 3% chance.
If there was no penetration, you most likely aren't pregnant. Precum even lessens the chances, since it can rarley get you pregnant.
Likely non-existent, as women are only pregnant for nine months.
It only takes once with unprotected sex to become pregnant.
Yes, it's still possible to get pregnant, though less likely than if you weren't on the pill. The only 100% effective birth control is abstaining from sex.
yes! It is very possible to get pregnant even without him actually ejaculating inside of you. My sister in law got pregnant and he wasn't even inside of her for 5 seconds. Sounds crazy I know. But that was the only time they were sexually involved and the paternity test proved it was his child. So I would try a different method than pulling out. I've had 2 friends get pregnant that way just in the last 6 months.