Long post ahead sorry. Just looking for advise or something.

I've been married now 3 years, together 7. When we first started dating our sex lives were amazing, felt like every chance we got we were going for it, felt like we were doing it multiple times a day. I always had a high sex drive, sometimes was hard for him to keep up lol. Obvioulsy that changed when I had my first son a year into our relationship. During my pregnancy any fast movements would make me sick and super nauseous, so obviously sex was something that took a hit because just rocking made me want to throw up. After our son I was ready to go again and was always down to do it, sometimes was hard with a new baby. But we managed it wasn't like befor. It went from multiple times a day to maybe 1-3 times a week. Fast forward to now... We have another son that is almost 2 and during that pregnancy was different I was constantly wanting to have sex. I felt like i was ALWAYS horny, I didn't care where we were I was like do me now. But the issue we are having is he has always had a lower sex driver than me but after our last son he had a vasectomy. After that it seems like his sex drive is not even existent. It takes so long to get him in the mood that by time he is I'm frustrated and not wanting to finish, it also seems like it's hard for him to stay hard if he doesn't focus it looses it's hardness and we have to start all back over. I have tried to discuss with him the possibilty of going to speak with his doctor about these issues, but he thinks everything is fine. Anyone else having this issue? Is there any way to fix it ?? HELP! I just want a normal sex life again 😩