Hi, So I m a 18 year old, healthy girl, and my period has such a weird pattern to it. It doesn t have one. I only get my period like twice a year, I can t even remember the last time I had it, I think It was in the summer last year. I thought with time It would even itself out and become more regular, but It hasn t and I m starting to grown concerned since I ve started to become sexually active. If you could be of any help, I d be really thankful.