If i get spotting does that i mean i will get my periof this month?

No: Not necessarily. There's no real reliable sign to tell you for sure that you will get your period in a particular month. When you are younger, it is not unusual to have irregular and unpredictable cycles, including random spotting. Are you on any hormonal birth control? This can also increase your chances for spotting between periods. After time it can also stop the spotting.