So, I took Plan B One Step back in December. I had the typical light red bleeding, and 45 days later I had my full period. Now, I am left with one question, what about the next few? Will I be 45 days late again? Will it come sooner? Also, I counted the light red bleed as one, then January's as one. So I am scheduled for today (02,12,17) but before the pill I was consistently getting my period the first of every month. So, can someone provide insight? Maybe a little knowledge?