CUNT & CUM = PREGNANT ??? Injected without protection

This should not have happened !!! Cunt and cum makes you pregnant... Has this calculation really worked out? A couple of weeks ago I really wanted to fuck my flatmate again because he has such a really hot huge cock. He actually knows that I'm not on the pill and so far it's always worked out well with pulling out. Only this time he was so horny that he just couldn't stand it any longer and squirted ice cold into my cunt... It's been 6 weeks now. The other day he told me that I'd got quite a round belly. Very unusual for my usual six-pack. And then I remembered that I hadn't had my period either... Did that really go wrong????