Myself and my fiancée are trying for a baby, but my partner is a little worried. I already have one child (4ys) from a different partner. But, my fiancée has also tried for a baby with his ex partner and failed. My fiancée and I have never used condoms in the 3 years we've been together, and he's never used them in previous relationships. Non of his ex partners have got pregnant. He's 27. When he left his ex partner she got pregnant with her new boyfriend. Do you think it's possible there may be something wrong with him or is it just one of them things that may take a while? Any advice appreciated.