Sexually deprived

My husband and I have had a great sex life, up until about a year ago. We used to both be crazy turned on all the time, and we both wanted sex very badly, but I feel like the flame has completely gone out. I don’t know if it’s something I’m doing to turn him off to sex or what, but I always ALWAYS want sex, and I feel like I have to beg him for it. He seems to have become very conservative and almost prude-like. He isn’t into sexting or dirty talk or kinks like he used to be. I have tried talking to him about it, but the conversation doesn’t really go anywhere. We’ve been TTC for about 4 months now and since then it seems sex is just for the purpose of TTC. He always cums, and I rarely do. I’ve never been able to come easily, it always takes some effort, but lately he hasn’t really been trying. I feel very sex deprived, even though we have sex often because TTC. I am never satisfied it seems. Any ideas to spice it up a little? To make my husband more attracted to me? Thanks!