17M and my dick started turtling a couple months ago and hasn't stopped since.

I constantly have to pull it back out and its uncomfortable and annoying. I am fat but I always have been and I actually lost some weight so this shouldn't be happening now. Are there any causes for this or any solutions. It sucks and its dramatically lowering my self esteem. Its a really good size when hard but when its flaccid I gotta literally pull that shit out. Sorry if this is TMI. Its embarrassing when I gotta discreetly pull my dick out of my own fucking body like im king arthur.