for the past 2-3 weeks i have had an awful pain when going to the toilet to pee, as well as masturbating. i was travelling in thailand for 5 weeks and was drinking a lot of water, but not peeing as much as i thought i should have. by the end of the trip the pain began, and every time i go to pee, there is a sharp stinging pain, especially when the pee begins to flow and then becomes less painful as the flow continues. it is now very on and off; if i drink a lot of water one day the pee seems to be relativley easy. however, a day when not drinking a lot of water (especially every morning) the pee really hurts. feeling my penis, it feels as if there is a small lump on the bottom side of it just beneath the shaft.