Welcome to icliniq.com.
A galactocele is a milk filled space inside the breast. Breast problems are common after childbirth in those women who had stopped breastfeeding or experienced sucking difficulties.
Firstly, I hope you are sure that it is truly a galactocele and not any other swelling. Probably it was diagnosed by mammography already. If not, you have to get it done first to assess the nature of the swelling.
However, considering this as a galactocele, I understand your concern, as five months has passed without any regression of size.
Now, as per my opinion, there are limited options for conservative therapy. Let us hope that it might resolve on its own.
There are two options available. The first one is to go for aspiration of the cysts under ultrasonography guidance. If this fails, the second option of open surgery should be considered for drainage.
And a general surgeon can perform these procedures after a proper diagnosis, and few preoperative investigations.
For more information consult an obstetrician and gynaecologist online --> https://www.icliniq.com/ask-a-doctor-online/obstetrician-and-gynaecologist