Pumping goof up....perhaps new pumpers can avoid same mistake

The pump has a safety release valve built-in to prevent over vacuuming, so this isn't as dangerous as it seems.  I had bruising the first few times I used mine, but it stopped with repeated use and stretching of tissue that has somewhat atropied.  A period of rest will allow all thins to heal.  I had the same brisuing when I first started injecting, so it comes with the territory, I suppose.  The big difference between the pump and the injections is the pump only keeps things erect from the ring forwards, the injection will make things firm internally for some length, resulting in much firmer, useable erections that don't try to collapse at that critical soft inch in the middle.   

I would also not recommend a drink or two before pumping. I usually have a glass of wine in the evening, and the pump therapy happens later. I found that the alcohol numbs some of the feedback you would otherwise get telling you to back off on the pressure. I'm sure it doesn't help judgement, either. Don't drink and pump - it's the law!