Ending the pill & late period

So I've been on the pill for 1.5 years and I decided to stop taking it because it felt unnecessary considering I'm not sexually active. Anyway I stopped taking it the start of my last period (19th April) and I haven't gotten my period since its been due from5 day ago. I might sound overly paranoid but I'm worried because my period is and always has been  extremely accurate for the last 8 years. Just to top this off I'm going on a holiday in a months time and I was gonna start taking it again after I finished the period that I'm meant to have now so I can "skip" that period, is that a good idea? or should I just start taking it again now? Sorry for the long read- overly paranoid girl, 18