Yes.
Yes she can still masturbate while on her period.
no
No, not every women has pains during their period,but most do.
Contractions feel like period pains on a whole new level. Imagine your worst period pain ever times at least 5. That's what labor pains feel like.
cramps.
Yes you can be pregnant, i had mild period like cramping when i fell pregnant with my 3 kids.
Yes
Yes you can.
Yes.
Yes.
No, but it might mean that she has a stomach virus, or she is starting her period.
No.