Birth control effectiveness

So im on the combo pill (ive been on it for years & i take it religiously at the same time every night) my boyfriend and I have sex regularly. The other day we had sex without a condom and he pulled out but some of it got in me. And ever since then my boobs have been really sore (he wasn’t rough with them either) and now i know its not possible that i had pregnancy symptoms that fast but im in the second week of my pack so i assumed i was ovulating but my boobs aren’t normally sore and i thought birth control stopped the ovulation process (?) anyone have any ideas?

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