Feel itchy in the donor area, still redness and in some places there are small red bumps - infection? (photos)

At less than 4 weeks it is normal to experience some itch at the site of healing wounds. This generally should resolve by the 6th month when a significant wound healing landmark has been achieved. In severe it, you could take non sedating antihistamines. However, if there is redness associated with intense itch, you could be having an allergic reaction to something including treatment creams etc.Bumps might result at 4 weeks from transected hairs that are trying to regrow.

If you are having issues after surgery, especially with "redness" you should contact your doctor.

What you describe is not uncommon at one month post procedure.Some of the bumps may be ingrown or partially transacted hairs.This should resolve over the next month or so but I would suggest a follow-up evaluation with your surgeon.Applying a mild moisturizer to the donor area may help with itching.

Photos are O.K.The redness remains just after surgery and it is "normal" to stay couple of months or more. That pinkish redness/discoloration and itching may fade away in a long time up to 3-4 months . İt depends on your skin color/fitzpatrick classification (Lighter the color of your skin , more reddish discoloration on skin after surgery). I recommend you to use nothing for that temporary situation.

I see nothing alarming from the photos, though the view is not great.  Itching is not uncommon and there are treatment options- you should go see your surgeon for an assessment and to discuss his/her recommendations for this.