Thanks for the query.
After stopping the contraceptive
pills, you will get withdrawal bleeding instead of regular periods.
And usually this bleeding will be lighter compared with normal menstrual flow because of the externally administered hormones.
The pain abdomen could be associated symptom with withdrawal bleeding.
This will possibly subside soon.
If not consult gynecologist once and take symptomatic treatment with antispasmodics.
If you want to continue with hormonal
pills you have to start now with your doctor's advice.
If you do not want to continue, after stopping the pills it will take some time for regularization of the hormonal levels.
After that possibly you can get regular periods.