Hi lil (((hugs)))
Ok, first things first. The tests you're likely to have are:
Early follicular phase hormone profile (lh, fsh, oestradiol and testosterone, between day 2 and day 5)
Rubella
D21 prog (I know you've had this but it may well be repeated)
Pelvic ultrasound
Hsg or HyCoSy, or laparoscopy if you've got a history of pelvic problems
Chlamydia testing
For DH - repeat semen analysis and separation test.
At the first appointment they'll go through your history and order tests. Don't worry, I know it's really stressful but I promise it won't be as bad as you feel it will be.
When you go back for the results, they'll either order more tests depending on what the results say, or talk about treatment options. Obviously they may well also say, don't worry, everything is fine - it's very possible so don't give up hope.
Which clinic are you going to lil? When is the appointment?
Hope you're ok x