I get these symptoms: firstly 2 years ago I had what was thought to be a urine stone - crystal in the bladder. This made the tip of my penis burn when I urinated or ejaculated. It has come back. This time it recurred very briefly 3 weeks ago after some anti-biotics (clarithromycin) I had taken for 7 days. Then 1 week ago the problem came back a bit worse. No bacteria was found on a full urine test. It was perfect. Now I don't get the burn with peeing, though there is a slight burning/hot sensation in my bladder. But if I ejaculate there's a burn afterwards - which is immediately after, then 1 minute later before it calms down. I also feel uncomfortable in my bladder all the time. This has lasted about a week now.I'm 44 a bit overweight, don't smoke, don't drink, eat healthy, work in an office, walk 2 miles home per day when I can. I'm a bit fed up with the sensation and the fact I cannot hump my hot 27 year old girlfriend - body like a goddess - still trying to work out what she see in me - without feeling pain afterwards.