Plan B

About two months ago my boyfriend and I had unprotected sex. Anyway ended up taking Plan B twice in the same month. The next month my period can a little earlier than expected 23 day cycle instead of the regular 28 days. But now it is month 2 and I’m 2 days late according to my tracker. Is it normal for Plan B to mess with your cycle like that? I’m just a little worried. I’m not on birth control but I will be soon. I tend to not like using condoms. We use the pull out method and he has never came inside once. I know it is still a 4% chance of getting pregnant. We did have more unprotected sex this past month using the pullout method. I’m trying not to worry just Incase me being late could actually be from the plan B two months ago. I will be taking a pregnancy test if I don’t get it by this weekend. Does anyone have any experience with Plan b messing with their cycle like that?