Feeling pressured to have sex..

The past couple days my husband has been wanting to have sex. Thankfully the last 2 nights he’s fallen asleep before the baby so I was able to get out of it but tonight he woke up and is waiting while I’m out in the kitchen with my parents trying to wait as long as possible for him to fall asleep. I’m feeling touched out and over stimulated and tbh the thought of sex is making me uncomfortable. There’s periods of time that I go through where sex makes me uncomfortable and almost makes me feel guilty in a way ? Idk but I hate that I can’t speak up for myself and say no. I do it so that he gets off my back for a while. I hate it. I know it’s not okay and I need to express that to him but idk how. It’s like my brain doesn’t allow me. When I try to say something, nothing comes out. The times I have said no he gets annoyed. Only for a few minutes tho but still. I hate feeling like this. I hate feeling like I’m not enough for him because I don’t provide him with sex and even though he’s reassured me in the past that he doesn’t mind, him getting annoyed doesn’t really feel like that lol I’m rarely in the mood. Idk why, I’m in the mood maybe 2 or 3 times a month. What do I do…

Forgot to add that a few nights ago he was asking me to move our daughter (we cosleep) to her bed so we could have sex. I told him no and he said come on really quick. Gave in and told him to move her. He did and she (thankfully) woke up and we moved her back into our bed. But then he was texting me to just hop over to his side and do it quickly. I told him no because she’d wake up and I’m not comfortable doing it with her right next to us. He kept insisting and then said we do it on the couch (we have a couch in our room). I told him no because she’s still half asleep and will wake up when she feels us getting out of bed (which she did) so that lead to him insisting the next night but thankfully he knocked out. Now it’s the 3rd night of him asking and I’m pretty sure he’s still awake waiting. I don’t wanna go to bed…