urinary tract infection
"I suffer from UTI'S alot! really severe. The doctors give this tablet only when the infection is really high as its a hardcore one hence why they make you feel a little sleepy. Just make sure you eat with each dose as if you don't it can cause sickness and tummy upsets (not nice)
but if you eat and do it right you will be fine and that horrible burning sensation will fade. Complete your full course even if symptoms have stopped."