I am a male and aged 20 and a few weeks ago I went to the doctors with shooting pains in my testicles and groin area. The doctor diagnosed me with Epididymitis and prescribed me with a course of doxycycline for 7 days. However I felt like I was having side effects such as feeling sick, dizzyness and small chest pains. I returned to the doctors today and without even checking me over he prescribed me with Ciprofloxacin. However after looking online I am starting to fear I have cancer. Not only do my testicle symptoms suggest cancer, but pain in the stomach and upper chest apparently signify that the cancer has spread. Should I be worried about cancer or is the pain in my chest a result of side effects of doxycycline. The pain seems to happen after eating and drinking, however sometimes comes on randomly.