Is there anything other than menopause or pregnancy that can cause a woman to miss her period?

Answers:

yes, stress.

Stress, significant weight loss or gain, over-exercising, drinking disorders, poor nutrition, medications, hormonal imbalance, breast feeding... There are profusely of different reasons.

Sometimes I grain a kind of discomfort or weakness within my leg's bone, after sexual intercourse?

Excess weight loss or substance gain, increase in activity, ailment, age (when you first start, you miss a few).

B(oYo)B's?

If a woman loses a dramatic amount of weight she will stop have her period.

How can I lighten period niggle pills dont work?

Thera re lots of other things that can cause you to miss a time. Stress, any number of phyical issues, such as being extremely over or underweight and poor diet. I enjoy read about irregular period resulting from exaustion, illness, and hormone change. Sometimes its just a fluke.

Does anyone know what this ovarian misery may be or is caused from?

cheese