I feel uneasy while peeing. Is this UTI?

Hi doctor,

I am a sexually active female. After a day of such vigorous activity, I am suffering with symptoms such as stinging and burning sensation while peeing. I am getting the urge to pee again and again while actually do not pee much. I still feel that my bladder is not fully emptied. There is a little pressure in the pelvic area with mild pain and discomfort. My urine is smelly too. As per what I read over the internet it seemed to be UTI. So, I ignored it for a day or two but the symptoms are still there and strong. I would very much appreciate you to get a solution for this as soon as possible.