how long should you get your period when you now start
The average menstrual cycle is about 28 days, but cycles that are 21â45 days also are normal. It may take 6 years or more after your period starts for your cycle to get regular.If you do this every month, you may notice a pattern. It may become easier to tell when you will get your next period.hen you first start having your period, it may last only a few days. Your first few periods may be very light. You may only see a few spots of reddish brown blood. Anywhere from 2 to 7 days is normal.