Hi, So I Am In A Long Distance Relationship And

Hi, so i am in a long distance relationship and my boyfriend is coming home next week. I realized that i was going to be starting my placebo pills right as he got home two days ago. So i thought of taking my placebo pills a week early, and later found out that that will actually mess up my entire cycle. I have now missed two of my regular birth control pills and have decided to go and buy a new pack. However that would be skipping my period and last time i did that, i had spotting. If this happens again after i have already started , and i take the placebo pills for a week, where on that new pack do i start or do i have to buy a new one altogether.