What Causes Itching Sensation On Testicle Post Protected Sex?

Question: I'm a male, that had protected sex 12 weeks ago. Four days later I started to itch on my left testicle. I took lotrimin cream applied it to area. This was no help, and it got worst. It spread to tip of penis. The tip swelled and I noticed a purplish round spot at opening. I went to the doctors and was prescribed a 10 day dose of doxycycline. It seem to help after seven days of taking meds. Three and a half weeks later it started to flare up again, after I ejaculated. I went back to doctors, at my request he swab tested the inside of opening for herpes and chlanydia. also received a one dose of azithromycin. The one dose seem to help with the severity but did not knock it out. The swab test came back negative. I made appoint with urologist. The urologist determined that prostate was a little enlarge and prescribed cipro. It helped for a time, but a head had a reddish itching area around it on back side. The lotrimin spray help it go away. I though i was on the path to recovery, but after ejaculating one night it returned the following morning. Tip is swollen the purplish to brownish spot came back, and had dry pain in right testical. It take about four days for the swelling\pintching feeling to go down and when it does it feels like it is in side the tube like a splinter. the skin at tip is sensitive still and the color has faded.

1. Is it possible to attach a pic of the lesion so that I can know better what I am dealing with


2. Do you have difficulty in passing urine ? No real difficulties.

3. Did you have fever ? No

4. Has the change in color reduced ? Yes the color has, and the pinching feeling.

5. did they do any tests like urine routine and semem analysis ? please attach reports ( apart from the tests you have already mentioned NO

Thank you for your response.

I worried this could be herpes without any sores. Could I be over thinking this?
Now that it has been 12 weeks, should I ask for a blood test for Herpes?

I visited the urologists today and he said he could see nothing. I told him it felt like a pinching numb pain. Like I rub it against something. He is doing s herpes 2 test, and set up an appointment to look at my bladder. I think it like a bust blood vessel, that will not heal.

Any thoughts?