Hello and thank your for your question! The burning sensation you describe can be very uncomfortable and cause discomfort with urination and your sexual activity. Usually the burning sensation is caused by an infection of your lower urinary tract.A Urinary Tract Infection happens when bacteria gets into your urinary tract. So i would reccomend you to do urine examination to check if there is presence of infection. If the result are positive, you should start a course treatment of Antibiotic.The type of antibiotics ang the period of time you should take them depends on the type of bacterium found in your urine. I would reccomend using Sulfamethoxazole-trimethoprim or Ciprofloxacin. Best regards!