Question about PCOS.

So I'm 20yr old. I was freaking out today thinking I may have PCOS .... My periods are somewhat regular (they got messed up for a while from being on pill) I'm not on the pill anymore but for about two years I've had black chin hairs that I literally have to keep plucking every few days they come back and black hairs on my boobs. I'm also very thin and not over weight or gaining any weight ... I'm about 125 lbs.  Are these signs of PCOS ? I'm worried I won't be able to conceive . I'm ttc now.:(