uti ?

once i start having sex i feel a slight burning ... once i pee right after sex it burns really bad... throughout the day it stops . it only appears to happen when i have sex and pee after.... is this a uti ? if so how can i get rid of it ? i had a yeast infection the week before i paid $80 for the creame the doctor prescribed .. i got my period to days after and the yeast infectio stopped now it burns when i have sex and when i pee after ... how can i get ride of this ? any home remedys or over the counter stuff. ?