Bending erect penis, prostate pressure

I started a year and a half ago laying on my stomach and if I remember correctly it was when my penis stayed pointed down toward my feet that I made the best progress of that era, but I experimented with it pointing up toward my belly button and occasionally had great sensations that way too.  The greatest hurdle was that it did become uncomfortable to the point of distraction and it took much concentration to power through that.  The benefit being that as a brand-new user it kept me from having the urge to masturbate.  It's been a while since that was the norm though, once I got my first Trident series I started laying on my back and I usually wear headphones too which keeps me from switching positions much.  I think that I'm definitely getting more feeling when I'm erect and will have to consider if my penis position under the covers can alter the sensations.  Thanks for the idea!