Answer: The only way to stop an irregular period is to start taking birthcontrol. Usually, you will become very regular when taking the pilland some people stop having periods all together when they go onthe shot.
Answer: There are no safe sensible ways to stop your period for one night. If you know in advance, go to your GP and get the pill to regulate your period. Do not try taking old wives remedies, they are not always safe.
Answer: You should be ok- Your body prepares for pregnancy, if egg is notfertilized, you have your period and it sounds like you did,although shorter but just for peace of mind you can get a hometester.
Answer: You can just get your period, you have to wait. Some women/girls get their period around 10 years old, yet some get theirs around 16 years old. So just wait and it should come. If you havent got your period by 18, then you should see a doctor and he will say if theres a medical reason. Hope it helped :).
Answer: Pregnancy will do it every time. or you could try malnutrition, this one will actually save you money on food at the same time. nervous tension is also a reason for the interruption of the menstrual cycle.