One in five women have polycystic ovaries; it is very common.
PCOS is a very individualistic disorder and affects each woman with it very differently . My main symptom is irregular periods and I was diagnosed with this based on that and my bloodwork showing a classic LH/FSH imbalance.
www.verity-pcos.org.uk is a good website to look at.
I would also suggest you read Collette Harris's publication called "PCOS A Woman's guide to Polycystic ovarian syndrome".
Some GPs don't know all that much about PCOS (its not a condition that they should mess around with) so am glad to read that you've been referred to a gynaecologist.
Many women with PCOS are given clomid to start with. It should be used with a degree of caution in some PCOS patients as they can become clomid resistant (therefore it does not work). If you are given clomid you need to ensure you are properly monitored whilst on it (blood tests and ultrasounds) and also seen regularly by the team at the hospital.
If clomid does not work there are other treatment options like injectible drugs and ovarian diathermy surgery.
Would try to stay within the correct weight range for your height as such gain can exacerabte symptoms and its very hard to shift excess pounds.
Following a low carb diet plan is not the way to go re PCOS - it is not sustainable in the longer term. Some PCOSers follow a low GI/GL plan instead.
Would suggest you get yourself educated re PCOS (knowledge is power!) asap so you are in a better position to both ask questions of the gynae when it comes to making treatment decisions.