Yep, what @Lizard said @AJsyd get a scan done, they should be able to tell if you might have PCOS that way. There are some other signs, but you can have them and not have PCOS or not have them and still have it! (being overweight, acne and oily skin, excess / dark hair on your upper lip or chin and a few other things). Hopefully it's just the travel that has thrown your cycle out this time and it will even out again. Small things can throw it out - last month mine was a long cycle because I got stressed about the fact that I might not O in time while DH was here - which was rather counter productive! LOL. So this month I am concentrating on NOT STRESSING. Woooosssaaahhhh.
No AF just yet, but I am sure it will come today. Cried this morning because one of the fried eggs I was cooking stuck to the pan and the yolk broke. Yep. Who'd be a girl.