I'm 18 having trouble getting fully hard lately. A few weeks ago I was a centimeter over six inches hard, I can safely say I've lost a full inch of penis, I don't even have that curve anymore, it stands straight up and is noticeably a lot shorter. This is obviously a blood flow problem, please help though I don't want to touch my girl now because she'll say it got smaller... Am I hopeless? Do I have to stay with my shrunken manhood? How can I go back to normal? Thanks.