HELP LADIES..Partners mixed emotions

My partner and I have always talked about bringing our own little creation into our team..he seemed so excited and happy about me feeling it was now ok to try again after last year( suffering three miscarriages in 12 months) He's recently become I don't even know how to explain it..a bit distant when saying fancy a bit of *wink wink nudge nudge* i dont know if hes worried if its all going to go the same way as last time, as the last baby made feel quite ill. Wondering of anyone else's partner has been like this..is it something I should raise with him or should I just leave him be.. advice from you lovely ladies would be very appreciated :)