please give advice!!!help

I wish I could tell you what's going on with your body...hopefully i can help in some way. If I were you I'd talk to your mom ...I know you are probably thinking hell no...sometimes sex can be an awkward subject with your parent but think about it...give her a chance to help you by taking you to the Dr. I'm getting the feeling that that isn't an option since you are here looking for an answer. Maybe your are scared to talk to her...idk. If you don't have a parent, family member or adult you feel like you could go to maybe just talk to a teacher or counselor about it at school. I know this is probably stuff you've thought about...talking to your parent or something... and won't consider since you are young, but just remember you need to take care of your body and find out what is wrong. It could be your period is just off...I have PCOS and have suffered with irregular periods my whole life. It could be something very important that you need to take care of. I know it's easier said than done for me to tell you to go talk to your mom about it....I know I didn't want to either when I was young...just remember your mom was a teen too at some point in her life. She may be more understanding than you think. :-)