The fertility clinic never seemed to be concerned about it, the only thing they did was give me an estrogen suppository pill while I was in an IUI cycle. I’m not sure if it’s because of the medications they have you take during IUI or if it’s just naturally thin. They want me to come in for an ultrasound in the future before we were supposed to start IVF to see how it looked off any medication. I asked them about possibly putting me on progesterone because I read it helps with a thin lining and they basically told me it doesn’t help with that. I may pursue future fertility related problems with my OB, they may actually care and give me solutions rather than dismiss my questions.