Please read my thread:
https://ball-pythons.net/forums/show...ot-vet-advice)
Mine was a much older snake, but he too had growths that were soft to the touch close to his cloaca that grew in 3x the size and very aggressively.
Chances are what you are seeing is similar or it's an infection. Either way, the vet must diagnose and treat this asap. A biopsy is a must and if possible, while it is small, to be surgically removed asap. It may not prevent future bumps from coming back depending on what the cause is, but this requires a more time sensitive and aggressive approach because they are growing, and that is a serious concern.
In the meantime, do not touch them, it usually makes them grow faster. I would start looking at the quality of life of your snake until it is in the clear. If it is cancerous, those masses will probably give him less than a year to live. But you must find any way you can to take it to the vet to get a biopsy and/or removal. Not doing so will most certainly sentence your snake to death. Drive to another city, call your local zoo, etc.