Thanks for the query.
Usage of one emergency contraceptive pill
may not lead to all these problems.
She may be having some underlying hormonal
So once consult gynecologist, get examined.
If she recommends go for ultrasound
and hormonal profile once.
By this the possible cause of her problem can be made out and treatment can be given.
She can take nutritious diet including fruits, vegetables, cereals, eggs, milk, fish, meat etc.
Taking small quantities of food at frequent intervals is beneficial.
For more details you can ask me directly through the premium forum.