After using a penis pump for a short period of time 10 min. I get a bubble on the lower shaft below the head, no pain, will eventually go away. what is the cause and should I be concerned?
As you have seen, a penis pump will enlarge a penis due to vacuum action, but it won't necessarily create a lasting erection once the pump is taken away. Using it may help some over time as you use it like an exerciser, every other day. Morning erections are a good indication that your "plumbing" is okay. Otherwise, there may be other issues involved and would depend upon what your urologist can determine.