Thin lining

Nicole
I am 30 years old and after 15 years of the pill I went off it last April. Never got back normal periods...in October I Was diagnosed w thin pcos. In February we tried Clomid for the first time; I did ovulate but we got a bfn. Because my lining was thin on Clomid the RE gave me femera for March but my lining was still super thin. Even with estrogen supplements it never got thicker then 6 mm.  My tww is over on Monday and I am pretty sure it's going to be a BFN again :(. We are going to try another round of femera in April but my question to you ladies-is there anything I can do to help thicken my lining between now and then? Anyone get a bfp w thin lining? I'm really hoping next month is my bfp. Xoxo