Thank you for taking the time to leave a comment and I’m sorry to hear about your problem with your bone graft.
I can’t speak from personal experience, but based on the information you’ve provided it sounds like you might be having an allergic reaction to the bone graft (your body is rejecting it). What was the source of the bone that was grafted? Was it from your body, synthetic, etc?
The problems could also be due to an infection, but I’d say that this is less likely since you have finished the antibiotics. Nerve damage is also a possibility (based on the tingling in your neck and face).
If the symptoms have persisted for 3 weeks I HIGHLY suggest visiting your dentist ASAP. They will be able to pinpoint what the problem is and removal of the graft might be necessary. I don’t think more time will help at this point and your symptoms are definitely not a normal part of the healing process.