my u/s for PCOS was only the internal pelvic exam - they asked me to empty my bladder, and did the internal exam that way. it's not painful, but as the others mentioned, if can feel very intrusive.

with the blood tests, FBE is a full blood examination - so the basic count to check your normal red and white cell counts. the others are hormone studies - FSH is follicle stimulating hormone, LH is lutenising hormone - PCOS (the actual syndrome) cannot be diagnosed just by visualising the polycystic appearance of ovaries (a lot of people have PCO without having PCOS) - the syndrome is a combination of the PCO and the unbalanced hormones. make sure, if your doctor hasn't marked it down already, that you go for your BT aware of when your last AF was - hormone levels fluctuate throughout a cycle - and what may be "normal" one day of your cycle will be way out of whack on another!

you may find that, if PCOS is confirmed, you'll have additional testing. i've had a full glucose tolerance test, with insulin level testing, as a lot of people have insulin resistance with PCOS - was then placed on metformin, which, for some, is enough to help them to become pregnant by controlling the blood insulin levels.

good luck with your testin - and hope it's not PCOS for you (although sometimes having a diagnosis makes it easier to deal with long term cos you know what you're up against!)