Hurts when I pee *updated*

It hurts when I pee. Infection or STD? Painful urination.. Funky smell (like fish) .. Normal discharge though. Probably just a yeast infection cause I had sex on Thursday and it started hurting yesterday (Friday)
*update*
Now after I pee it still stings, but I whiped myself and my pee was a light pink ..? That can't be normal UTI. Probably going to call doc Monday for appt. 
*update* 
Peeing more of a blood color and very little amount of liquid. it hurts 100x more than before while I pee.  Is this a doctor matter or a trip to the urgent care/ER