Help - Could I have PCOS?

Erika
I'm currently 15, and I don't have a female figure in my life so all the help is very much appreciated! 
- I started my period when I was 11. Sometimes it's regular, but sometimes it'll be irregular for a period of time. I sometimes also skip whole periods 
- I have excessive hair on my lower abdomen. It started when I was around 10-11. It resembles a male-like "happy trail", and it's extremely thick and dark. I've tried to shave it before, but it just grows back darker. 
- I am also a little overweight, but I understand that PCOS may not be the reason for that. 

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