Bumped/hit my head with a hair dryer on 14 days post op of hair transplant. Not a hard hit. Did it damage hair grafts?

If you look like a Norwood 2 now but you think there is a good chance of progressing to a Norwood 6 then go see a doctor.  You need a good "Master Plan" and plan your hair restoration process carefully.

Cobblestoning is an error of graft placement. The properly placed graft rises minimally usually about 1 mm above the scalp surface. This maximizes the proper alignment with the surrounding scalp producing growth of the transplanted grafts that are leveled with the surrounding scalp.When the...

The pre-exiting hair may fall out eventually or may fall out with shock hair loss. These are possibilities.  If you are concerned it is best to discuss with your doctor who has examined you before and after surgery.

A bad hair transplant scar is hard to fix. FUE will not "debulk" this area. It may make it worse.  See a doctor for an examination and possible options.  Steroid injections may be an option.

3000 to 4000 FUE grafts at once may make your scalp look sparse or over harvested. If you have issues, please follow up with your doctor.  There isn't much you can do at this point other than wait for surrounding hairs to grow.

If you had a hair transplant surgery and have post operative questions, it is best to contact your doctor.  If you want to play cricket, make sure your wound has healed adequately.