Chin Implant stitches still there, will they go away?

I had a chin implant 1.5 months ago and although the external stitches were taken out 7 days post op, I still feel the stitches under the skin. My incision was made externally not orally. Are these sutures Permanent or will they eventually go away? It feels really hard under my chin and it's really starting to bother me. I can't get a hold of my surgeon to ask.