It appears as though you could be suffering from a simple urinary tract infection
This will of course have to be confirmed by a doctor following a physic examination and a urine analysis. If this investigation reports an inconclusive result, a vaginal swab test or screening for a sexually transmitted infections might be necessary.
I would advise not to self-prescribe, so please visit your doctor and leave the treatment to him, as all conditions have specific treatment. So instead of experimenting, get accurately diagnosed and treated accordingly.
Hope this helps.