Hello! I have been through your question. Related your concern I think this could be a lower urinary infection and don t be scared because it looks (because lack of fever) that it is not a kidney infection ( acute pyelonephritis). Usually the frequent urination with burning sensation,lower abdomen pain and bad odor of urine are the symptoms of an lower urinary infection usually caused by escherichia coli bacteria and it is common in women because of a shorter urethra than men. So what I suggest for you is to do a physical examination (giordano test) by a doctor, urine test, urine culture,abdominal echo (to see renal function), full blood count and azotemia/creatinemia (to see the renal function) to define better the diagnosis and to start antibiotic (usually I prescribe bactrim or ciprofloxacin if you aren t allergic).You should continue to drink ( as you have done)a lot of water and tea to clean the urinary tract from infection. I hope my answer help you. I wish you a quick recovery.