Left testical get inside when Cold.

Tomorrow i was taking shower eventually the water comes cold nd then i have to shower with cold water ..then i realize my balls (testicals) get upside when scrotam skin become tight but one of the left testical is is getting upside to much when its cold nd scrotum skin become tight so i have to adjust it to get on the right place its happening with me first time right ball is go up but not too much that i have to adjust it but left side testical is go to the lower in the side of pubic hair so have to adjust with my hand..i m gonna loose my one testical? I m very depressed now becoz i m a natural  bodybuilder if i loose my one ball its look so awkward please help me anyone it happend me tomorrow but today i just go for my workout heavy weightlifting but i am having the same problem when i was doing my set my scrotum becomes tight nd one testical goside of the pubic where my penis Start nd that tym i have to use my fingers to get it on right place i think i have overactivecremaster