I noticed friday what appeared to be a 1/2 dollar size swelling between the testies and anus, near the left side, where that ridge is between the anus and testies. I had a dr. Apt that afternoon and he looked at it and gave me an antibiotic. I have been taking hot baths and am in a lot of pain. I am really hurting across my lower back. Hard to sit down, and yet it hurts my back when I lay down. I made an appointment with my dr. tomorrow. I am a 64 year old male, taking hydrocodone, and fentanyl patches for back pain as I have a bad back, but this is hurting with the medication.