hi,iam a 23 year old boy,recently i noticed that my testicles appear to be hanging loosley,however they shrink normally when temperature is low but during hot times they hang way too loosley,plus i noticed that the skin of my testicles is getting like the skin of an old man,i dont feel any pain in testicles how ever,please tell me what is this,is this normal or there is emergency situation,iam worried,another thing that i would like to add is that i dont have any problems in penile erection and urinating,