You sound EXACTLY like us!! I was pretty bitter there for a while because we stopped "preventing" in June also but rarely every BDed either and then DH would also ask questions about me being pregnant yet and I would get upset and say, "Um how do you expect I would have concieved, imaculate conception?!"
But we have started getting better. Not just with the TTC piece of it, we're just trying to make more time for each other ya know.. That way it also doesnt have to make the BDing feel like its only for a specific reason. I wanted for our "starting to try" to actually help us reconnect in general, it can help us make a baby but also just feel closer. We still go through little stints where we don't seem to but its getting more frequent, it used to feel like over a month at a time in between which I agree, does feel embarassing somehow...
Good luck in your journey!!