Your age is menopausal age.so irregularity in cycle is natural.
You should preferably not take any medicines to postpone or prepond periods as it would further disturb your hormones and may create problem in future.
Next Steps
better take natural foods like pineapple,raw papaya which induces contractions in turn causes periods.drink lots of water.
Health Tips
start homepathic medicines to normalise your hormones during menopause.they are very safe and effective.