Hi. i had two periods within a week of each other last month and now i havent had my period in 35 days, it never came while during my sugar pills???

Irregular periods: Quite uncommon at your age! You must see a Gynecologist as soon as possible. Having your mother go with you is not a bad idea.

Breakthrough bleed: Breakthrough bleeding (bleeding at the wrong time) is very common on birth control. It happens in about 1/3 of users. Its no big deal and usually self corrects over time. If you are not satisfied or it continues to happen then consider using a different birth control method. It is a common side effect and does not mean something is wrong or that the pill is not working.