UTI'S ?

Lala
I seem to be very prone to them for some reason. My friends who are are sexually active as well, never seem to get them, with the exception of maybe 2. 
​I'm just wondering what can I do to get them less often? I usually get them after intercourse and it's gotten to the point where I've gotten them too many times. 
​Tips? Advice? Help a girl out. Lol thanks loves.