Large bump on roof of my mouth after oral surgery. Could this be harmful?

Hello, I recently had oral surgery (impacted wisdom teeth) in which they extract all 4 wisdom teeth that had not yet erupted. It has been two weeks since the surgery and pain has stopped for the most part except for major heads, aching jaw, aching ears, and i have a large bump on the roof of my mouth where on tooth was extracted (top right). The bump is no longer painful but I am concerned because it is pretty big. I have a couple other bumps but they are A LOT smaller. Someone maybe been in the same situation and could offer some insight? Is it worth making another apt. and wasting time going to doctor that is always rushing and doesn't explain or answer questions any how? Or is this harmless?