I miss sex

Lately my husband can't get an erection. After a fair few attempts he has finally realised there is a problem. We are TTC but I haven't been stressy and pushy about it. Sometimes It'll take me over half an hour to get him hard and even then he can't always keep it up. I know it must be really hard and a blow to his ego but he is seeing the doctor tomorrow whilst I'm at work. I just really miss having sex! I told him I don't want him to pleasure me at all until we can both pleasure each other and enjoy it. I hope there is nothing wrong and it just turns out to be psychological as we used to have an amazing sex life.

Has anyone else been through this in a relationship?