Can Regestrone Sandoz Heal Abdominal Pain?

i am 27yrs, i got married in aug and i had missed my periods on oct.then i consult a dr.and i did the upt.the result is negative,she gave me same tab, latter i had periods on middle of november.then i lagged my periods for dec,jan, and feb, last week i again saw that dr. she gave me regestrone sandoz for 7 days.now i having some abdominal pain.is there any problem for me??