Problem of over active bladder. Problem.

I have over active bladder symptoms since long time like frequent urination and also offensive odor in pee. And also most of time my pee colour is watery color and there is no difficulty and pain or burning like feeling during pee or after pee discharge. Sometimes there is sensation for pee immediately after pee discharge but it go ½ or 1 hour. I think this problem cause me due to large intake of fluid because I used to drink 6-7 liter of water sometime ago and from that day this problem occurs. One thing I noticed that when I engulf a glass of water then frequency of pee increase but in case of when I take water sip by sip then it reduces. Kindly suggest if(available) any home remedies . Or any medication to recover from this problem.