Hi, Welcome to HealthcareMagic Forum.
You should be taking Regestrone
for 5 days continuously. You can expect period in a week after you stop this Tablet. Kindly get yourself examined by a Gynecologist first. Take your medications regularly and go for regular follow up. If you have gained weight recently, you should be reducing it by regular exercises and avoiding high calorie foods. Eat healthy nutritious balanced diet which should include fresh fruits and green leafy vegetables.
Wish you Good Health, Take Care.