Idk what to do

My husband and I have been TTC for about 4 years.

When we got married, we ditched the birth control and just continued our sex life as normal. (3x a week or so when we were feeling it) Eventually, we weren’t getting pregnant so I downloaded Glow and started tracking my fertile cycle.

Slowly but surely it became harder for my husband to “finish the task” and he ended up having trouble keeping his erection. IDK if this is due to pressure, genetics, or a lack of attraction to me. Admittedly, I’ve gained some weight since the wedding, but it was in the interest of my health since I was incredibly stressed and starving myself at the time.

I genuinely don’t know what to do. I made him an appointment with a specialist but he flaked. We’ve been together almost 10 years and he assures me he wants children with me. I’m 100% sure he’s not cheating or interested in another woman. I just need some advice. 😕