Is it normal that you have two different sized nipples after a inverted correction surgery?

I did a nipple correction surgery 7days ago and today when I went back to remove the stitches and bandages I noticed both nipples are completely different the left one seems much bigger and swollen & the right one seems perfectly fine my doctor said that this is normal & that it will eventually go down & look like the right one. I'm just really concerned that it will continue to look like that. Please advise if it will go down or will I need to operate once again??