3rd trimester still no sex drive

I feel like this entire pregnancy I have completely lost my sex drive and it's taking a tole. My SO and I really want to have sex again especially before the baby comes, but it's just so damn hard to get in the mood anymore. I feel guilty because I want to have sex but can never get in the mood enough to actually engage in it. I'm also dealing with prenatal depression which makes it a lot harder. Does anyone have any advice? I just want my sex drive back!