Thicker uterine lining?

Amy • Married 5-20-12 to my love since `08 ❤️ Our 🌈 Lucas arrived 5/16 - baby #2 became an 👼🏼 in 9/19

I just think of Phoebe from Friends when she was waiting to see if she was ready to have her brothers babies implanted into her uterus - Think Thick!!

But really, any ideas or tips of anything that I can do to thicken my uterine lining? Been TTC 15 months for baby number two, and a uterine ultrasound back in January showed my uterine lining was only 1 mm where it should never be lower than 4 mm. It needs to be 6 to 8 mm for successful implantation. Because I have no uterine lining to shed, I basically have almost nothing for periods.

I finally have my first appointment with a reproductive endocrinologist near the end of the month but I’m curious if anyone has any experience with then uterine lining and tips if anything that I can do to thicken it?