Hi, Welcome to HCM Your symptoms are indicative that you have developed UTI infection. Visit an emergency room and get your vaginal swap tests done, urine test ( routine and culture ) and blood test to rule out STD. Infection with E.Coli generally results in burning sensation, increases the frequency of urination, it can cause fever lately as the infection gets more concentrated. When infection spreads in the bladder or kidney, blood/pus cells may be seen in urine. You are in need of medical attention get diagnosed and treated well. Take plenty of water to flush out the toxic effects from the body. Norfloxacin tabs can do you good. Avoid un-protected sex, maintain hygiene, wear lose cotton dresses. Take care.