If you have a little cut or abrasion on the outside, it will sting if urine hits it. This is different than a UTI which is from the inside and it hurts as your flow begins to come out and winds down. You often also feel like you can't quite get it all out and you have a frequent urge to urinate in general. It's different than stinging. It's like a burning from the inside. Which do you think you have?