Confused…worried…

Roxanne

I haven’t had my period in seven months so my dr prescribed me some medroxyprogestrone (spelled something like that) and said to take it for 10 days and then my period should start in around 3 days after the last pill… well I finished the ten days and on the second day without I got bad cramps and now it’s day three days without it and no cramps or period. Should I be worried…?