Getting Pain In Rectum After Orgasm. Noticed Painless Hard Lump In The Center Front Of Testicle. What To Do?

Question: am a 47 year old male. I have suffered from non-bacterial prostatitis since i was in my early 20's, Recently I notice a symptom that I had never had. During or after orgasm I get the most sever, spasm type pain that feels like it is up in the rectum, in the prostate area. It is so severe that I cannot move until it stops. It lasts from a few seconds, to a few minutes then subsides. The next several days I get the prostatitis type pain such as perineam soreness, especially when sitting, a fullness feeling in the rectum. I also just noticed a pin head sized painless hard lump pretty much in the center front of my left testicle. I have performed the testical exam by rolling it through my fingers and do not feel any lumps inside the tesicle. I went to a Dr. not a urologist and he really didn't feel what I am feeling and prescribed antibiotics for a week and said if it didn't get better to see a urologist. What do all these symptoms sound like to you? Thank you.

Thank you so much for your reply. Howver I do not have any pain associated with the lump. Like I said it is the size of a pin head and it is basically in attached to the front of my left testicle. Where the midline is that separates the right and left. When you move the left testicle out then you can feel the pin head sized lump. A sight bit of graininess around it as well. No a free moveable lump and not attached to the scrotum. Just attached to the testicle. On the other part. They have never bound bacteria in any of my urine samples or prostate secretions so I can't imagine it being an infection. What is some what of concern is that I have a pea sized supraclival lymph node that I have showed to my family doc. and an ENT. I had different opions. One says it is caused by where the ligament attaches to the muscle the other says it is brachial plexus/muscle injury because I have had neck pain and stiffness on the right side for over 6 months. I am propably a paranoid hypochondriac who worries about everything and now I am concerned that the lymph node on my neck could be caused by testicular cancer etc. Whatever it is i feel in my neck is not as hard an it is a little moveable. Problem is when I saw the dr's for this I hadn't noticed the testicular lump. Could they be related. And I never knew non-bacterial prostatitis could cause that much pain up inside the rectum during and after orgasm. I always thought when i read that symptom it referred to pain in the penis as the fluid was leaving. I have had no sex partners. This has happened only during masturbation I couldn't have an infection from that. Sorry for the long follow up question. Just a worrier with all this stuff going on. Your opion again would be greatly appreciated. You have been very helpful so far and I thank you for that.

You are probably correct. Thank you.