Will birth control throw off you period?

Will birth control throw off you period?

I only took it for a month.it made me feel weird so i stopped taking it after i was done with the pack. I started it February 6th. I didn't start my period my normal time. I started February 28th. I just realized I haven't had it so far this month. Only a few days left outta of the month? I feel like I'm going to start and then I don't.