Irregular

Okay ladies I need some opinions!

So I have REALLY irregular periods like sometimes they're 2 weeks late and sometimes I miss a month and don't even have them and when I do have them they're really bad especially the pain, I get light headed, dizzy, hot flushes and the cramps are so bad I get the shakes...

Am I the only one who's has them this bad? And does anyone know what might cause them to be so bad?...