Am i at a high risk to get pregnant if i had sex at the last day of my period, and he came in me but i used emergency pill 2 to 3 days after that?

Not likely: If you have regular cycle than unlikely although nothing is impossible , should be check by your physician

Unprotected Sex: Generally, ovulation occurs after six to 14 days following your period, so, statistically, you are at low risk of conception, especially if you used the emergency pill afterwards. A good home pregnancy test can detect a pregnancy a few days before the next period, so, to be sure, you might want to test yourself.

No risk: You are at no risk of getting pregnant after unprotected sex on the last day of your period. You can only become pregnant in you have unprotected sex close to the time of ovulation typically between 10-14th days of your menstrual cycle.

No: The most fertile time is actually 14 days after the 1st day of your period. However, this is most true for women that have regular periods (bleeding every 24-28 days). If your period is not regular, then you are at risk to get pregnant any time. It is always better to think ahead than have to worry. Birth control pills or condoms are more effective.