welcome to health care magic.
you are 50 years old so you are likely to go into menopause
soon however if you are having heavy bleeding, please get a sonography
done , a transvaginal sonography should be done(plese not the endometrail thickness). if the sonography is normal then you need not do anything as of now. however if this heavy bleed continues you should get an endometial aspiration /sampling done. also you are feeling tires because of the blood loss. plese get a complete haemogram done. see the report and start iron supplements
as well as some good multivitamins like zincovit