Hello Thanks for writing to us with your health concern. Basically, the same tablet that can be used to postpone periods can be used to prepone them. Nothing is 100 % reliable, but yes, the medication is comparatively safe. You should ideally start it after consulting a gynecologist. Progesterone preparations are generally used. Primolut N is a common preparation. Others are Meprate, Deviry etc. If your cycles are regular and predictable, then you can use progesterone to prepone your periods. Tablets ( Meprate for eg ) have to be taken twice a day for 5 days, on stopping them, you will have withdrawal bleeding within a week. So for example, if you want your periods on the 5th of November, then you can take Meprate twice a day for 5 days from 25th of October till the 30th of October. You would have a withdrawal bleeding within 5 - 7 days of stopping Meprate. Please understand that Meprate ( or any other progesterone preparation ) is a prescription drug, and you should take it only after consulting your gynaecologist. What I have written is what I would prescribe to a patient coming with your request, however a physical examination and history to eliminate any risk factors for progesterone, your weight etc, should be ideally completed before taking this drug. For postponing the periods, you should start taking the tablets twice a day, from 5th of November onwards, and continue taking them as long as you wish. When you stop, you will bleed within a week as usual. Both the methods will be alright for you as you are in time, both are equally good and effective because the basic reasoning is the same - take the tablets twice a day for 5 days, and you will bleed maximum within a week of stopping the tablets . Generally postponement is more reliable than preponing. All the best. Please feel free to discuss further.