Anal skin tag removal surgery-swelling?

Hi all, 4 days ago i went ahead and got an anal skin tag surgically removed. I had residual skin leftover from hemorrhoids i had during pregnancy. Very little pain however I noticed there's a firm pencil eraser sized bump by the area where the tag was excised. it honestly looks like a hemorrhoid that COULD turn into another anal skin tag. I was told this was just swelling but just wanted to see who else has done this and if the area will heal "flat" once swelling goes down? Will i end up with another skin tag? i really hope not as that would render this surgery useless! Any experience with recovery and swelling with this surgery? was it worth it in the end?

how is the area now?