I have a green dot under my skin right up next to the incision. Should I worry about it?

I am 15 wks post op breast augmentation. I noticed the dot under my skin once all of my glue over my incisions had come off and the stitches had dissolved. It's a small green dot almost looks like a marker dot. My surgeon said it's probably a suture trying to work its way out but it hasn't moved. I would like to start putting vitamin e on my scars to help them fade but i was instructed not to in case the green dot is trying to work it's self out. What could this dot be and should I be concerned?