Water: Drinking a lot of water everyday will help shorten your period. If you are on an exercise regime, you should take 6-8 glasses everyday to remain healthy. You should stay away from caffeine and alcohols so as to effectively stop your period early. Taking plenty water is a good remedy for cramping and bloating.egardless of your reasons, if you are looking for ways on how to stop your period early, here are some methods you can use based on your individual need. Aleve: Aleve is popularly used as a reliever for cramps and pains that are experienced by most women while on their periods.