my mum was told after her 4th child that he had tilted her cervix (he was nearly 9 pounds, the other three being around 5-6 pound, and herself only being 5 feet tall weighing 7 stone pre pregnancy) She was told that due to this she would never conceive again. (which at the time was music to my mum's ears!!!) yet along i came 13 years later when she was 38 years old. the word shock didn't cover it. So i would say no, your chances of conceiving probably aren't reduced having a tilted cervix. Lots of baby luck to you. x