Thanks for posting on HCM
First you do not have to be sorry for your ignorance as it is your right to want to find out about your issues. We on the other hand have to provide you with the answers.
The bite by the dog could have caused a nerve lesion which could be causing the severe headache
and lump can be due to infection. You required immediate medical attention after the dog bite as you are predisposed to infections and possibly rebies infection.
You could take analgesia such as tylenol
etc to manage the pain till you can see your doctor tomorrow. If there is nerve damage
, then it is most probably superficial and will not be a cause for alarm. With time you will feel much better.
For now, get checked up soonest.
Hope this helps