UTI problems?

Em • Have a beautiful little baby boy 😌♥️
I seem to almost constantly get/have a UTI? 
I never show any of the normal symptoms an then all of a sudden it's a full blown infection. 
 I just feel like all of a sudden I'm busting and my muscles cramp up and I'm in so much pain and feel like I need to pee soooo bad and then I pee it's like two drops and my muscles spaz out and it feels like my body is trying to push out more pee that's not there? 
I can't control it and its hurts heaps and I'm not sure what to do about it being so painful? 
Obviously I go to the doctor regularly but they have no tips for this they said they've never heard o it before? 
Has anyone else had this? What did you do to relax yourself?