I had sex with my boyfriend for the first time and he used a condom the first time but not the second time but he didn't inside me and I am on the birth control pill but I took it that day but not the next day and I was on day 3 of the first week after my period , what are my chances , I am 16

You could be pregnant. You'll have to wait to see if you miss your period. If you do, wait two weeks and test with the first urine of the morning.

Yeah though what are my chances? I don't think I should be because I've took the pill from November and missed It the odd day but have took it everyday since Saturday

yeah though what are my chances? I don't think I should be because ive took the pill from November and missed It the odd day but have took it everyday since saturday
Once you miss a pill, it's like you haven't bothered to take the rest of them for that month. And he didn't use a condom the second time around. You are playing Russian roulette with making a baby. If you can't obey the rules for birth control, it would be best not to have sex.

At this point, I'd say your chances are better than not. If you dodge a bullet this time, please tighten up your birth control attitudes and behavior.