First RE appointment.....Nervous

After 3 rounds of Clomid with my OBGYN (50, 100 and 150mg), a chemical pregnancy and PID due to CM changes from Clomid......we are being referred to an Infertility Clinic. Just some issues we have are PCOS, premature ovarian failure, tilted uterus, endometriosis and luteal phase defect. But that's it 😒 far. 
Needless to say I am VERY nervous about our first appointment and what is to follow. Neither of our insurances cover any fertility treatments so this is about to get very expensive. 
Does anyone have some helpful hints about our first appointment? Questions to ask? Just anything. Thanks!