I'm confused by your question. Your profile states that you are a female, so I'm wondering how it is you have testicles.
Perhaps you're a woman, and you're asking for a friend? I'll proceed on that basis.
First, everyone is different. Our bodies change at different rates and speeds. And your testicles are no different than any other man's; one always hangs lower than the other. This has nothing to do with late puberty.
I understand the pressure you feel to conform to some "masculine" adult norm, but there's not really anything you can do to force the issue. There's absolutely nothing wrong with you. In fact, you may have a youthful appearance for most of your life, which, believe me, most people would kill for. My suggestion to you is that you accept who you are and enjoy your youthful appearance while it lasts. Believe me, one day, you'll wake up, and you'll wish you still looked that way!
Stop worrying so much about your appearance and focus on becoming interested in other people. A man who pays attention to others and likes them is always popular. Then when your adult body DOES manifest itself, you'll be a confident, attractive man. Good luck. Dr. J
Try increasing your testosterone by exercising to build muscle mass. You won't look like a kid anymore.
Oh, and if you smoke marijuana, stop. It lowers testosterone and muscle mass.
Thanks for your replies.
By the way, I'm male, and my profile states that from what I see
wait, are you implying that my puberty could still not be finished?, at 20? is that possible?