Two periods with Plan B

Hi ladies .. I’m used to being a very regular person; my periods will ALWAYS come at the same time each month. Well lately I’ve been seeing someone knew and kind of screwed up so I took a plan B twice. One on the 6th and one on the 17th of June and now I have my period. Is this normal? I’m pretty scared since my period is always always always regular and now I’m afraid my cycle will be completely ruined 😪