Question

Sometimes after jelqing or manual clamping, my head becomes small(er) and when I get an erection I feel a very dull ache inside my penis below the head. In fact it really isn’t an ache but more of a pressure, as though the blood is trying to get into the head but instead is pushing on the tissues below it. Is this a good or bad thing?

A bad thing if you ask me. It isn’t natural. Take a few days off and use the time to read around here more. It could be that you do the exercises wrong.