I am 21 years old, few months before i suffered with the pain of testicles. It resulted in such a way that, i was unable to sit or ride the bike.Later what i observed is the right one is smaller than the left one that to the testicle on left was bigger.I was not experiencing any pain or something. Hence i request you to kindly suggest me what should i do in order to make my testicles healthy. is this a serious problem? Does it cause any vacuum in sex in future? Also suggest me regarding over ejaculation leads any unhealthy environment towards the penis and testicles?
It's likely you just never paid any attention to your testes until the injury. There's nothing wrong with irregular testicles. If you're not feeling discomfort or pain it's not likely any sort of medical problem that needs to be adressed before your next check-up.
The only reason you have testes is to allow you to ejaculate. If they could be harmed by doing it they wouldn't be very useful for you. As long as you're not ejaculating with a method that injures your testes you'll be just fine.