Could I get pregnant again??

Im kinda freaking out because last night we had sex and he didnt pull out. I forgot where I was in my cycle (day 12) and thats awfully close to O day if I ovulate on day 13. Even if I ovulate on day 15, I know its still in my fertile window (I have been having 26 day cycles)..I dont even know how to feel right now. I dont want to alarm my husband unless there is reason to, but now I feel like Im going to be freaking out inside waiting for my period. Im not gonna lie, Ive had baby fever on and off, but I know this wouldnt be an ideal time for another baby. I would be happy, but not sure about my husband's reaction which I think Im most worried about. Please tell me if you got pregnant from sex a few days before ovulation? With LO it was O day for me. I just took an opk (this is about 8 hours after the unprotected sex) and well, thats a really positive opk! Is there a high chance I could get pregnant?