Numbness around the lip laceration sutures.

I cannot feel any touch sense near my lips where stitching thread is present. Its been 7 days still there is little improvement. I tried feeling it with a pin it doesn't feel much there. Should I be concerned about permanent sensory loss? P.S I have stitching on upper part of lips and inside the lips which is not visible to directly on face(i.e near teeth the inside part).