My Period Is Almost A Month Late. I Last Got

My period is almost a month late. I last got my period around November 16 and it is now January 9 so i defiantly missed a period. I'm defiantly not pregnant because i've never had intercourse but i'm starting to freak out. I've never missed a period before. I did take the pill and stopped in July last year due to my period not stopping. Is there something wrong with me? Will this affect me having children in the future?