hi im 28. 5ft.10 and 11.5 stone.i have been suffering with pain at the tip of my penis and looks very red and infected and my bones and muscles ache. my lower side back is very painful and my right leg hurts,a throbbing kind of pain maybe i have a few things wrong .i have had std tests and have all come back negative and also had blood tests and urine tests that looked for kidney problems. i have also done a fasting blood test but everyting is coming back negative.i am becoming more and more worried about this and have blood coming out at start but in middle of passing it seems to be ok but at the end it comes out a lot and getting worse day by day the next step the doctors have lined up for me is a camera in my stomach. what i find strange is that at the start of my problem with passing blood i was only having blood at the end but now it comes at start all the time. i would just like to know any advice you could give me and what it sounds like to you???? i thought also it might be worth me saying it is a very stressful part of my life right now sleeping and eating habits are not the best to be honest and smoking quite a lot maybe this could be the cause of or at least not helping my blood situation???? can you help thank you