Any advice for first fertility clinic apt or general

Natasha • I`m 25 years old, I had excision surgery for stage 4 endometriosis in October 2016. Endo already growing back due to trying for baby. Husband has testicular failure. Looking for positivity 💞
I feel sad that I'm having to get help to do the one thing my body was made for. But I'm ready for this journey, I got my questionnaire last week and got it all filled in and sent back. So I'm waiting now for my first appointment at the fertility clinic. Wondering if there's any advice anyone can give me on going in for my first appointment or just in general. 
Thank you