SW should be great for PCOS, as you will naturally lower the bad-carbs anyway. It'll be much better if you use wholegrain rice or pasta when you have it as well.
Basically, choose one healthy B and one healthy B and lots of free food (lean mean / fish / fruit / veg). Use frylight instead of oils for cooking.
What kind of thing do you like with your pasta? There's bound to be a good recipe or idea on the forum under recipes.
Don't be afraid to ask your consultant to run through the starter talk again - I think lots of people need to hear it twice, because on the first time you go to class you've got so much else going through your head (and often your heart if it's been a very emotional decision) and you feel nervous too.
Basically, once you get on SW section of minimins there are lots of subforums listed, and they're a great place to find advice. You can also search forums, as usually the topic has come up before. For example, if you went into the SW Recipes forum and wanted to search for a tuna pasta reciepe, you can type 'tuna pasta' in the search bar and the top right of the forum page, click on minimins and press search. Anything with the address that starts
www.minimins.com/slimming-world-... (in green) will be specific to SW.
Best of luck, and give us a shout if you get stuck.
Beccy x