Do you think my donor area is over-harvested following my 3000-graft transplant? (Photos)

At only nine day post-op it is a little too early to determine if donor area is over harvested. You need to let thing heal and then post new photos of the donor area . If you had at least average donor density to begin with you should still have some remaining usable donor hair for future harvesting if necessary.

At 9 days post-op, we can define from the pictures if your donor area was over-harvested.
The donor area is still in healing phase. the grafts taken won't grow hair on the donor area. 
we need to see the donor area before the surgery.

Over harvesting a donor area is a function of how many grafts are removed and the caliber of your hair shafts.  With fine hair and lower density, sometimes 2500 grafts is the maximum.  With the average donor area there are 15,200 follicular units so 3000 grafts is usually not an over harvest.  The area is still a little pink and the hair is a little short in the harvested area.  Give it some time and follow up with your surgeon. 

Your donor area will always look "thinner" proportionate to the number of hairs taken out after a FUE harvesting surgery.  The hairs will NOT grow back from the donor area (where it was taken). It is best to wait for your donor area hair to grow out before determining if it was overharvested.

After 9 days of post-operation, it won't be possible to provide an accurate answer to your question.
I would give it easily a month or more to see if there is any improvement.

Good question. I think you need to be patient and wait at least a couple of months until the donor area grows out a bit and then see how it looks. Good luck to you.

At 9 days it´s not possible to be definitive from your pictures. There is an obvious change but this may simply be while your hair grows longer and the donor area properly heals. You should be able to discuss with your Doctor and it is quite easy to calculate. You need the surface area of the donor harvested. Then the follicular unit hair density in the donor area. If the density is taken in a few areas this helps to take an average hair density. You can calculate your overall hair density from this and then start to examine the % that was removed. As time goes by you will be able to see and feel a hair density change if over harvested. The area may feel patchy or the hair feel finer and thinner. Hope it is ok for you 

Your FUE procedure is too recent to truly tell if the donor area is over harvested. A density of 60-65 hairs or more per sq centimeter prevents the appearance of baldness or patches. Healing of the donor area can take a full 12-18 months to completely recover.

Excellent question and it is too soon to say that after 9 days PO only. So, I need more time for the evaluation. I will suggest you to follow your PO instructions, let the wound healing process to continue and to see your surgeon for the follow ups. Good luck.

From your images and at this stage of healing it is not possible to give you a definitive yes or no. There are many aspects that need to be considered. For example, your starting hair density and approximate hair count per hair unit. Your hair density changes around the sides and back. The harvesting pattern must reflect these changes to counter overharvesting areas. Then transection if it is sever can also cause over harvesting. The quality of the extraction can leave damaged hair units in the donor that may miniaturise. Keep your hair and scalp clean and allow the healing to continue. As your hair grows out properly it will be easier to determine the quality of your donor and then measure your hair density once again.