It sounds like you have a bladder infection or UTI.. Go to the doctor and if you can't do that.. drink some cranberry juice.
If his hands were dirty or had bacteria on them, it could cause a UTI infection if the bacteria got into your urethra. That could be why when you pee you don't have much urine. Try drinking a lot of water and cranberry juice. If it doesn't go away within a few days, go to the doc.