Your symptoms indicate that you had been suffering from secondary amenorrhoea. It is a condition when a person does not have menstruation
since 3-6 months. The most common cause is anaemia
for both primary and secondary amenorrhoea. You should have consulted a doctor or had a pregnancy test done. Now since you are already bleeding pregnancy is ruled out, but it is important for you to get examined per vaginally by a gynecologist. Some investigations may be needed to manage the bleeding.
Other causes of secondary amenorrhoea are ovary, hypothalmus, pituitary, thyroid
dysfunctions. Visit a gynecologist to examine and investigate your general condition before coming to the diagnosis.
The itch or burning sensation can be because of UTI, do not worry take care of your cleanliness and hygiene. You may have to get urine test ( R/E and C/S done) before your doctors prescribes medicines. It will get fine. Enjoy good health, take care.