What Does A Bulky Uterus And Thin Endrome Mean Before FET?

Hi , I am woman of 29+ years as i m presently going thru IVF process where pick of my egg is already over . Now Clinic has informed me that they will transfer the frojen embryo (FET process ) and for that i am into regualr observation for more than a month . Every time they are scanning and as per theie recent report on today , they have written the followings :- a.Bulky Uterus b.Thin Endrome
Now they have asked me to go for hysteroscopy surgery and based on that ,they will decide for FET .Can you please tell me wheather my above mentioned uterus and endrome is good / bad for IVF sucess ?Kindly Help Sreeradha Basu