I had 4 impacted wisdom teeth extracted almost 8 days ago. I went for my follow up yesterday and they said I was healing very well, no signs of infection, etc. The left side has been healing a bit slower than the right. Today I notice a small firm lump on the left side of my neck and I have no pain associated with that. Is this something that I should be alarmed about or is this a natural response to the dental work I just had completed? I'm also close to starting my period so I'm not sure if that has anything to do with it.