endometrial biopsy?

Ashley • PCOS. Stage 1 endo. 👩🏻25 👨🏻27. TTC- 2 1/2 years. 3 failed IUI`s. 3 CP. FET1- BFN FET2- CP FET- coming soon
I just had a failed frozen embryo transfer and I'm scheduled for a biopsy in two weeks. Can anyone tell me how it was and what did you do? Did you get pregnant your next cycle. Is it painful ?