After jerking off, my erection length goes down but the hardness of it does not. My penis stays super tense and firm, especially along the base and sides, but shrinks up so small. It stays like this and if i dont lay down for an hour it shrinks up so much i cant even wear pants without discomfort. When i used to jerk off my penis would just relax normally after masturbation but now it stays shriveled and cramped up. Any ideas on what this could be?

P.s. ive acquired an upward erection angle too over the past year. It used to point straight out but now points up towards my face. Have gotten check for peyronies and uro didnt find anything. Sometimes if im super relaxed i can bend my penis back down to normal angle but most the time when im erect now its tight and angles towards the sky/my face.