SO low sex drive

So I’m only posting anonymously because I’m embarrassed. 🤦🏽‍♀️ I’m 27 and my SO is 39 we’ve been trying to conceive for the past 6 months. However we’ve run into a lil bump. In order for him to stay hard he has to take a pill a help him out. No prob right? See I lost my virginity in 2014 and everything is still kind of new because he’s the 3rd guy I’ve been with. He is never in the mood for sex only time we really get it on is when he takes his pill and for like 3 days the sex is bomb. I’m starting to get sexually frustrated cause lately he’s barely been touching me. Last month we’ve only had sex 5 times. He doesn’t like when I masturbate cause he feels that’s his job but we aren’t even having sex anymore I’m extremely discouraged and sexually frustrated. What do I do? 😩😩😩