ah help?

i recently started the pill and i missed 2 pills when i first started but then i regularly took the pill everyday and haven’t missed one again. me and my boyfriend had sex and didn’t use a condom and he pulled out. and i’m on my sugar pills now and my period hasn’t came yet? could i be pregnant. (also when i started the pill my period was 12 days long and it’s normally around 4 days long could this be why i didn’t get my period this month?)