perioddds😷 plzzz help

Triple
K so... hii my name is triple a ik it's a weird name since I'm Emirati and not so much emiraties put their kids name like idk, anyways I'm 13 turning 14 in September iM here bcz I'm struggling a weird condition in my period which is I get my period for two months and One month it's not coming it been like this since I got it the first time which was on 25th June 2016 I asked my mom she said it's k cuz I'm still in the beginning of my period journey and idk wt but I started getting annoyed cuz the month that I don't get it I get worried that when I'll get it and that affects my emotions and studies plz help me get it every month and I'll be soooooo grateful for that😢😩😫