I have used a penis pump only a few times now (just out of curiosity, as I was getting kind of bored with not experimenting in the bedroom) and nothing bad has happened until last night I think I went too far with it and when I removed the pump I noticed one of the bigger veins at the very top of the base of the shaft became pumped up and prominent and my erection quickly subsided (probably due to my noticing this and freaking out)... it hasn't gone away since (it's been 24 hours now), you can only see these veins when erect and they only disappear when 100% flaccid. The dorsal vein enlargement goes from the base and is quite big and prominent for about 1 centimetre or so down the shaft (on top). There are also some other smaller veins that have become prominent along the shaft elsewhere. None of these feel hard anywhere when touched, they feel I suppose like "normal" veins, kind of squishy but definitely not hard or like a tough lump. Will this go away over time or should I get it checked out/corrected? Is this Mondor's disease?