Your menstrual bleeding is quiet heavy.
There are chances that you may have developed anemia
This may be the reason for swelling of the legs.
Any pain, increased bleeding indicates underlying pathology like uterine and ovarian tumors.
You need an ultrasound
of the KUB and the Pelvic for diagnosis.
You may be suffering from superficial fungal infection
of the toes.
Topical anti fungal creams may be used.
Consult a Gynecologist.