Pregnant and sexually frustrated. Please help

My boyfriend and I have been together for 3 years and I’m 30 weeks pregnant. Before the baby, he used to have an insane sex drive, like to the point he used to get paranoid about his being higher, thinking I was just doing it to make him happy. For the past 3 months or so, his drive suddenly disappeared and I’m trying to be understanding but it’s just driving me crazy.

He says he’s stressed out which is totally reasonable. But I’m sexually frustrated because he went from wanting it at LEAST once a day to never seems interested. We have sex still but he even says that he has no sex drive and is doing it to make me feel good & happy. But you can tell he’s not really into it when he does it and it makes it worse imo.

This past weekend, we went to Spencer’s and he told me to pick out something we could use. He said before that he liked the idea of tying up and when I asked him what kinky things he’s tried before, he said he’s used handcuffs once. So I found a set of cuffs and rope and I was excited, he claimed to be excited all night. But when it came down to it, he used the cuffs for all of 10 seconds and when I asked if we could use the rope, he literally got annoyed 😐😐 And when I told him I felt like he didn’t like it, he claimed it was because the bed didn’t have posts like when we used them before. Which only made me feel worse about it. And OF COURSEE he finished but I didn’t and he didn’t seem too worried 🤦🏼‍♀️

I’m not trying to sound shallow. I really love him and want to work. Our relationship is good outside of this. But this sudden disinterest is fucking with my hormones and insecurities and making me feel like he’s not attracted to me rn. I’ve tried talking to him but nothing changes. And if I turn him down or mention toys, he gets really upset and says it makes him insecure.

@Anne: I’ve straight out asked him (even told him that I’d understand) and he says that’s not it