Hello Doctor... For The Past Two Months I Have Been

Hello doctor...

For the past two months I have been experiencing an urge to urinate repeatedly... The moment I drink water I feel the necessity to go and pee... It happens even if I don't drink any water... It all started in the last week of January after I returned from a trip... I had a mild fever for two days... During the first few days I had the sensation to pee almost after every 15-20 mins irrespective of any water intake and the urge used to be uncontrollable... Over the period this has subsided a bit but is still persistent... Now I need to go after every hour or so... But the sensation is steel there... I have a habit of drinking around 2 litres of water during office hours and sometimes I have a few gulps at very quick intervals... Also you may need to know that I suffer from uncorrected hypospadias for which I had been unsuccessfully operated upon when I was 4 yrs old... So I am uncomfortable urinating standing up... Now I have to go for a trip again in month to a jungle where washroom facilities are not available when we go for a safari inside the jungle... So please help me...