When I pee, the first main urination comes out perfectly fine, nothing hurts nor burns, but about 3 minutes after I got done using the bathroom I feel the urge to urinate again. So I go to the bathroom, but this time little to no urine comes out and I have to force it out in a sense. It burns if I don t do this and sometimes burns when I let it out. It doesn t happen daily, but more like once or twice every 2 or so months. What is this?