I had 3500 grafts and I want to know is my donor area over-harvested?

Your Donor area may be over-harvested reflecting that either the FUEs were taken too close to each other for the density of the area, the punch was too large or just that your donor area could not support the number of FUE grafts you received. It is possible that the donor area is undergoing a vascular shock loss and if this is the case, it might grow back in 6 months or so. If the area that is shown reflects the height and extent of your FUE harvest, then your surgeon took it too high and too low. You might want to get a second opinion.