i have a few lipomas in my abdomen and mine hurt when bumped or ressing on them kind of like a burning stinging feeling
This is one to have checked. It could be cyst or just fatty scar tissue from a trauma, but it could also be something else. NEVER feel like a hypochondriac when it comes to your health. Its good that you are self aware and wonder about your body.
If you go to the doctor, then you can have peace of mind. If its something, then you got it soon enough to do something aobut it. If you wait it could be a bad choice; the longer you let something go the more damage it can do in your body if it is something to worry about. Be happy you felt it, go have it checked out and report back what it is so we know.