He said it’s me :(

Me and my husband have been trying for 7 months now... yesterday we were all cuddled up watching Netflix & there was a scene of a girl giving birth, & he just said “I can’t wait for you to give me my baby” & I responded to him “ I can’t wait either I’m just being patient” & he’s like “why doesn’t your vagina work” of course he was playing but it did make me feel bad ... he’s been wanting a baby forever & I can’t seem to make it happen :( I feel useless & sad now.