As i can make out, you were recently injured...and got your stitches removed just a week back,,,,,,Now i would recommend that it is too early to decide on the kind of scar that will form ...and whether it will heal with pigmentation or not.....sometimes post stitch scars
can heal with hypertrophy tooo....and all you can do now is too simply use a sunscreen regularly before going out in the sun so that it decreases the chances of hyperpigmentation
....and let the healing mechanism of the body do its work,,,wait for atleast 4-6 weeks ,,,and then once the resultant scar is formed...then you can visit a dermatologist
who can analyse the final resulting lesion and decide upon the treatment accordingly...
Hope it helps
Dr Geetika Paul