Don't read stuff on google,it is perfectly normal to get breast cysts post meno,in fact they are very common,I'm constantly getting them,the trick is to know the difference,if you look at the nhs site,I'm sure it tells you on there how to recognise them. Cysts can vary in size and are usually smooth and they can slide about under the fingers,anything nasty is usually hard and stays put BUT get it checked out and please let me know how you get on. Don't keep pressing on it or it will get sore,I've had them drained in the past but it's not really necessary in most cases