Hey There Ad,
I was diagnosed with PCOS at the age of 14 (At that age you don't think about kids or the future) I too wasn't give much info, but was told it would be very difficult if not almost impossible for me to conceive a child as I have a highly severe case. Well let me tell you doctors are wrong! I'm now 30 and I'm excited to say I'm 8weeks pregnant and counting! after almost 3years trying.
My cycle was all over the place, I'd miss months and then be on for 2 weeks and well...my cycle was a mess, as was I. There are things you can do to help with this condition, which in turn will help with your cycle. Cut back on sugar (sugar free or diabetic) drinks and chocolates can help for the sweet tooth, it helped me but everyone is different. If your a smoker, give up, this can make things worse. Exercise is key, yoga, Tai Chi, swimming and walking.
Speak to your doctor about putting you on Hormonal contraception, this will help regulate your cycle and reduce things like acne, cramps and may help clear up some of the effect PCOS has on your body.
One of my best friends has had this condition for a few years and she was in a similar boat to you. Her doctor gave her an online site called www.PCOSnutrition.com she says its very help for a lot of things.
I will also say Juice Plus is very good for PCOS sufferers. I bloomed to 14stone, I'm only 5ft 2 but this was due to the effects PCOS has on my weight, after using this I dropped the weight and became pregnant!
I hope this is helpful for you. Best of Luck x