pregnant with no sex drive..

I am currently 22.5 weeks pregnant & I have had zero sex drive my whole pregnancy so far.. I feel so bad because my husband obviously still does but I literally NEVER want to have sex with him😅 I keep reassuring him it’s just me & I’m still very attracted to him in every way. he says he understands but I still wanna make him happy. but it takes every ounce of me to finally give in *when* I do. is there something I should do to improve it?! pleaseee help!