Residual prolapse post hemorrhoidopexy.

I underwent laser stapled hemorrhoidopexy to address my grade 3 hemorrhoid that used to prolapse during a bowel movement. It had become quite big in size over a period of 5 years, but it was painless and I never had any bleeding. I am 20 days post-op and I can still feel the lump at the rectal exit (smaller in size than my actual hemorrhoid). The lump goes inside if I push with 2 fingers but then it again sits back at the same position (rectal exit 6 o' clock position) Because of the positioning of the lump, it is painful and is grazing the buttock when I switch sides. The surgeon said that it will go away in time. I wanted to know if it will really go away and what is the expected timeline? If it does not, when can I feel relieved of the pain and discomfort of that lump? Thanks in advance.