Sacrletjane, I would look into the spotting thing. It does not sound right. I also disagree with your doctor about getting pregnant with low progesterone. Clearly people who, e.g., have a lutel phase defect, don't get pregnant due to low progesterone.
About immune testing. If you google Dr. Beer, you will see all kinds of things. There is also a book out by him:
Basically it is a matter of two blood tests. At least the UK ladies have those sent to Chicago. I am not sure if more places in the USA do those. Also, an endometrial biopsy may be done. That's about it. However.... If one does have some type of an immune problem, there are lots of meds involved when TTC or pregnant. It does not sound like fun. However, they have a good success rate, as they get the women who have been tested for everything else. It also seems that many women who are told to do IVF and the other things and don't end up with a baby that way, actually can get pregnant naturally this way. You know... If your body attacks the embryo, even using donated cells is not going to help. It is very interesting stuff and to me just shows how little we really know. This is rather new stuff... There must be so much out there that we have no idea of, yet.
Oh... and the interesting, sad thing is that those women who have miscarriages are more and more likely to have them if they have immune issues. After each miscarriage the body gets more efficient in miscarrying. :( We really should have this testing available right away for all those with two miscarriages! It is a bit like thyroid stuff: You have to fight and go private to get good care. (I live in a country where healthcare costs basically nothing. Yet, I have had to pay everything out of pocket for my thyroid issues.) Sorry about bringing up the miscarriage stuff, I really don't want to make anyone feel worse!! I believe I read that Dr. beer said 70% of women with 3 miscarriage have immune issues. We are talking women who may have earlier had a healthy baby. I think this is very important to know, as it could help someone.
I need a fairy doctor! (Ha... Dd was given an Elmo dvd by Grandma) You know, a doctor, who would actually know about all these things. I just want to brainstorm with someone who knows more than I do and has ideas and hope for me. My thyroid doctor was amazing! She was just like that: listened and suggested things and it was really like brainstorming with someone wiser than you to come to a solution. She also was always interested in what I had learned online. She even let me start Hydrocortisone based on something I had read online, as it made sense to her, though it was different than what she normally had suggested. Loved her, but she retired.
I really would like to talk to an older woman who has gone through all this. I would like to learn how she coped and whether it gets easier. However, these women would have been infertile before the time of the web. I think that it would be a blessing and a curse. I mean then she would have had a couple of books and a doctor and that's it. I think we can drive ourselves nuts researching everything and wondering if this or that can be my problem. Maybe that makes it harder to accept and move on. You know, like in the Old Testament they talked about a woman whose womb God had closed. If one believed that, instead of that something in the body in not functioning right due to the environment or whatever, the moving on process would maybe be different.
I am going to be interviewed for an artivle and thought of what it looks like to others. If I read about someone who had an almost six-year-old child and said she was always hoping for more, I know I would feel bad for the person but feel like it is not likely to happen. It was a sad and weird experience to think of myself as if I were someone else. I still identify as being the mom to a young child. Those yearf of a little one are fast ending.