Recently, within the past 2 weeks, I have had a burning sensation while urinating. My urine varies between colors. I have also noticed after masturbation, my semen has a yellowish tint to it. The first time this happened, the semen was a VERY dark & distinct yellow with jelly-like substances in it. The jelly-like substances never came back. Throughout the past two weeks it has remained yellow but with a much lighter tint than the first time. It has been white for the most part & then it has a tiny bit of yellow in it. It burns while I urinate after masturbation. What is this? Is it something I can fix without seeing a doctor?