You may be suffering from a varicocele. It often occurs when the veins inside your scrotum become enlarged, so that your testicle feels heavy and sometimes causes pain. Resting can often relieve the discomfort. To manage varicocele, supportive underwear and avoiding standing for long periods can be helpful. Visiting a urologist is better to get the right advice.

If you are having burning pain, and frequent urination with a possibility of kidney infection, then it could be the reason. However, UTIs are usually caused by bacteria that have already entered the urethra. If the infection is some complicated type, you might require antibiotics to clear it up. 

Robotic surgery can be a treatment option but there are other treatments too like medications, lifestyle changes etc. Based on the severity of your condition, and after seeing the reports physically, the best treatment for you can be decided. 

Wart-like sores inside penis tip are likely genital warts CAUSED by HumAN papillomavirus (HPV).. Can be sexually transmitted and rarely cause pain. Treatable but cannot be cured, may go away on its own. Get tested and treated by a doctor.