FET and Cyst

I had my day 14 lining check today and the doctor said my lining is good she said that they did find some cysts in my endometrial area she said it was most likely caused by the estrogen since they werent there in my previous charts but that it was ok start to start my progesterone on Thursday and that I can move forward with the FET. My question is has this happened to anyone else and do these cysts go away? I will be calling my doctor tomorrow since they are closed now but I cant stop thinking about this so would appreciate some insight.