FTale you are so not out yet.
Phantom...is your doctor a perinatologist? Big word, I know...a perinatologist is an obstetrician who specializes in high risk pregnancies. If you confirm that it is, in fact, your uterine walls that are thin and not just your lining, I would highly recommend seeing a perinatologist and have them work with you as you get pregnant. Because I have an unicornuate uterus, my RE wouldn't even allow me to start treatment without having a peri sign off on it. I didn't even know perinatology was a thing before having to meet with one. Meeting with the peri was a huge relief to me. Not only had she seen lots of women with uterine anomalies of all types, she has also delivered 100s of healthy babies with moms just like me. She was extremely kind (granted, I know that's the person and not the job), and really instilled some confidence and restored my hope in ever getting to have bio kids that I birthed myself. The reason I say see a specialist is because even fertility doctors aren't necessarily in the business of pregnancy maintenance (though you'd think they would be) and regular ob/gyn's also don't have the same expertise. It has been a really steep learning curve for me in that there are SO many branches of the same branch of medicine (baby-making = regular pregnancy care, surgical gynecology and obstetrics, infertility treatment (this has about ten different branches on its own), high risk pregnancy, regular gynecological care that doesn't include obstetrics, etc. You'd think that a gynecologist would have some information on each of these, and maybe they do, but their specific knowledge is limited to the branch of women's health they chose.
All that being said, I still hope it's your lining, but don't lose hope if it's not. It's really just about learning your own body, listening to it, and then finding the right doctor.
too early to right your cycle off, nearly every bfp story ive read the mummy always feels like af is coming 
to everyone.
s!!!!
!!!!!
