From your limited details i presume it could be pcos. when you are having urinary infection with bleeding you need to take antibiotics under doctor's supervision. It could be cystitis and may need urine culture. Secondly your menustrual irregularities may be due to pcos. You need to consult a gynaecologist and has to take medicines under her guidance.Life style modifications, exercises and avoiding high calory foods especially fried and bakery items will help you. pcos cannot be cured but can be controlled  and lead a normal life. Be cheerful and optimistic.consult a gynaecologist