Man...I miss pumping.
Let me warn you guys, as these warnings have appeared periodically throughout the thread but it's always good to get this info out there. Pump in moderation. I was an idiot, and didn't let my glans heal completely after a blister from pumping too long and with too much pressure. I waited for the skin to go flat, but not return to it's original color. I assumed I was healed "enough". I continued pumping, and these parts of my glans where the blister formed got redder and redder. Now, scar tissue is built up in that area and won't completely go away. Without pumping if I lightly touch the scar tissue (which just looks like a mild red spot about the size of a finger nail) it stings just slightly.
Luckily, this doesn't effect my erections, my stimulation, or satisfaction from orgasms and sex. At least not once foreplay gets going. The mild stinging is always there until the stimulation begins. Additionally, any time I pump leaves it hurting for a few days, stimulation or not.
While I can count myself lucky to be able to continue a normal sex life, I'm disappointed that I may never be able to pump as I once did. I was gaining significantly and ready to move up to 2.75" tube before these issues occurred, and now one of my favorite past times is possibly removed from my life forever. Be careful. take breaks. If you get an injury, heal for AT LEAST 2 weeks (I suggest a month). heavy pressure for those few millimeters of size aren't worth it.