Hello, some time ago i noticed some pain at the tip when am about to urinate and i thought i noticed a discharge from my penis and promptly went to see a doctor, he claimed not to notice anything but did a urine test to see if i had a bladder infection or something, test was inconclusive as the change in colour was not particularly noticeable, gave me some antibiotics and referred me to an STD clinic, had a test and it was all negative but i never shook that feeling that something was off.... been very careful with sex ever since but now am thinking i noticed a discharge again. atimes i feel like am dripping from the end of my penis but theres usually nothing and when i squeeze, sometimes some colorless liquid like precum. Dont know what tro do, what if i go again and they still dont find anything or does this sound like something youve come across?