So I'm on BC (combination) and I take it regularly at the same time. My bf don't usually come inside me but on the 24th of January he did and I have taken the pill 3 hrs late on the 23rd (it wasn't on me so I took it quickly as I got home)

I decided to take plan B on the 24th because we both got worried and scared. We have had sex again and he came inside me again...

I'm waiting for my period which is suppose to come next week on the 4-5th if Feb.

Should I be worried?