i had the testing done by fertility specialist as part of the routine testing - but i already knew mine were up the proverbial creek as i'd had a GTT in the past that had me with a BSL of about 1.2 after two hours (so bordering on full hypo and having nurses pushing jellybeans at me to get it back up quick smart). a GP should be able to do it - but would have to be a GP that is switched on (way too many of them aren't really knowledgable enough about it)

if you can, start eating a really Low GI diet. it's not the same as being on metformin, but it will lead you in the right direction. Low GI food stays in your system longer as it takes longer to break down, so the sugars don't peak as high and don't drop as quickly. simple things like multigrain instead of white bread, brown (or basmatti) rice instead of white, sweet potato instead of normal spud. swapping out high sugar/starch foods helps heaps. i haven't been on met now since i was about 14 or 15 weeks pg (and DD is 20 weeks old) - and haven't had the dramas i was having before. i just make sure i have protein where i can (eggs/cheese/chicken) and as much unprocessed food (so wholegrain stuff) and i seem to be staying on top of it better

i would probably request the testing from whichever doc confirmed the PCOS. if the GP isn't helpful (if they confirmed it) then ask for a referral