Dear MrDavid,
Hooray for your quick recovery.
I had a few stitches that took a while to dissolve. One or two eventually worked to the surface and I was able to pull them out (eeeeew). These made quite small lumps.
The main incision was enlarged for some months, but now I have to look for it. I didn't do anything with the scars, they just vanished. But it took a long time.
If you have any concerns or pain, consult your doctor. Shouldn't you be going for a follow up appointment at the hospital where you donated?
Love, elephant