Hlo, I Am 22 Yrs Old And I Am Having

Hlo, I am 22 yrs old and I am having very loose testicles and they hang also lower ... I think so the reason for this is that I have done gym exercise without using any supporter. Or is it somewhat related to my masturbation which i usually do.... I also think so that I'm suffering from navel displacement ( Nalle).... please give me advice