I went on the pill last saturday, i had unprotected sex last night with my husband could i have got pregnant?

There a chance you could have you are surpost to use something eles while on the first pack of your pill just to let them get in your system the only way to know for sure is take a hpt some can tell up to five day be4 your missed period

If you took your pill the same time everyday, it is unlikely.....Anything is possible, but I'd say it's very unlikely.

Birth control should be in your system for at least 30 days, before you take that chance. Also birth control is only 90 percent safe. You should also use a cream to go along with that.

Most doctor's recommend a full cycle before feeling safe about having unprotected sex while on the pill. However, some will say that a week is sufficient for preventing ovulation. Good luck!

There is a chance

Birth control is 99.9% effect and it all depends on what kind your taking and you should always use a condom to be double safe

There is a possibility but it would depend on where you were in your cycle for sure.