Fertility recommendations

I apologize in advance if this isn't allowed. I'm looking for input on the best fertility specialist close to St Louis Mo. I'm advanced maternal age, premenopausal, and struggle with thin lining. I'm moving into my 4 FET, 3 failed to implant and I'd like a second opinion, before I lose my sanity not to mention, my life savings. I'm exhausted mentally, emotionally and physically and feel I'm just a number at this point.
I really need a fertility doctor who truly cares and understands my true to desire to parent, instead of just moving along like this isn't a big deal. I know how difficult this is for every single one of us, and we're all doing this for our happy ending. Thank you in advance!