Increase Endometrial Lining

Does anyone know of a natural way to increase your Endometrial Lining.

Mine was 4mm on CD8 and I have heard this is a little thin. Dr isn't worried though.

I knew with all 8 of my pregnancies. Burping is the dead giveaway that I'm pregnant, without a fail, every single time, if I start burping around the time I'm due - then I'm knocked up. However this may not be a good thing considering, I'm yet to hold a living breathing bubba in my arms. Maybe the time I DON'T know I'm knocked up and then later find out I am will deliver me a viable pregnancy, who knows, I don't anymore. https://worldmapwithcountries.net/