I hope, if they find something, that it's something treatable via TTC naturally! (I am secretly hoping he finds something for us that he can treat, because our only course of treatment is IVF since DH has ASA.) we all might be surprised at what he finds no? i have heard about many successes, including TTC naturally with immune treatment.
I think you should do okay with the blood draw! I didn't feel faint or anything (last year I had 25 vials drawn for something totally unrelated to IF, and I was okay then too). When I did it then, they gave me some juice, but this time (even though it was 70 vials), they said there was no need (I went to different labs each time)...so I was confused by that, but I never felt faint or anything.
I wish you much luck!