Do I have a urinary tract infection? ?

I think I do because it hurts when I pee (not always). Also, sometimes at night I feel like I constantly have to pee. And sometimes my pee is cloudy and smells. It hasnt been doing this much lately. I have to admit I have felt like this for some time now but Im sort of afraid to go to the doctor :/ Ive taking cranberry concentrate pills...it helps for a little bit. I dont drink as much water as I should...HELP! Im scared.