i think you are from India,it is (UTI) DUE TO THIS CLIMATE CONDITION ONLY.
if you have only burning urine and not any feverishness you can take some Citralka or Renalka like medicines . if infection is there you consult doctor
get tested and use appropriate antibiotics.
1-for your constipation
and your uti both you should take plenty pf water or juicy food.
2-increase the intake of fiber content in food
3-stop the Jung food or fast food.
4- when ever you feel to urinate you do it .it's a must most of the infections are developing due to this only and the lack of cleaning after micturation or sex.