For me was different coz my doctor has his own bioreproductive medicine centre, so every time that he see something strange call others from the Medical Staff (that is the good thing, because I never pay their services, coz my Doctor explain me de difference when he is the one who is asking question
and when we are doing
) He is always in my ultrasounds and other topics. So he has all my history and he works with our infertility.
I use clomid and then tamoxifen, had a few IUI but finally got pregnant alone
As you I have already a son who is 9 years old, that why you and me we have secondary infertility.
Don't be afraid about the RE is the best for you, probably you will have blood tests and other exams, they are not terrible, also I had U/S sequence to see how my folies grow up and then they find my LUF Syndrome and also de endometriosis. DH went to a speciallist too and he is a Pure Breeding Guy
........ Conclusion: guess who is the Problem here ???
: You got it, ME!!!!
good luck my fingers crossed for you