Yes it does. People smoking
marijuana once a week might face a reduced sperm count by more thn 33%, can develop testicular shrinkage in a year or can also suffer from testicular cancer
if the smoking has passed five year mark. Pain
is an alarming sign to your testicular health, so its better to quit weed and consult a qualified sexologist.
Since you are young and your symptoms are new, you have a fairly good chance of recovery.