When Will I Have Menses After Stopping Norethisterone?

after usin norethistrone to delay my period while i went on holiday i had my cycle 3days after stoppin the tabletsdoes that mean my period is due 28days from the tablets or is it the same time as usual?im confused im 35 two kids miscarried bablt last yr and take citralopram to keep my head balanced due to bein hormonol constantly