Clomid doesn't "help" with PCOS. It just forces your body to ovulate. The only thing that can really help PCOS is metformin which in combo with Clomid can help restore your fertility and prevent a m/c. Women with PCOS are insulin resisitant which is what causes you not to have periods, ovulate, gain weight..etc. and Metformin helps with the insulin problems.
There is no "magic pill" for PCOS. It's something you have to deal with everyday. The best thing you can do to help yourself get pregnant is work on weight loss and getting healthy. Weight loss can also lower insulin levels.
Another problem with PCOS and Clomid is you usually need a higher does (over 50mg) to ovulate or get pregnant and the higher your dose of Clomid the harder it is to conceive (because a higher dose can cause cervix mucus to repell sperm).
I'm not saying you can't get pregnant with 50mg of Clomid while having PCOS (it does happen) BUT if your PCOS is not under control (either with diet and working out or Metformin) your chance of a m/c is going to be higher. Most PCOS women on here have had a few m/c before finally gettting pregnant.
I wish you the best. TTC with PCOS is not easy. It took us 5 years (27 months of which we did fertility treatments) and IVF to have my DD Nevaeh and FET (and another 15 months) to have our twins.
I've done over 15 Clomid cycles in my life and another 8 injectable/IUI cycles. It's not easy getting pregnant with PCOS but just remember it will happen in time. Don't give up no matter how long it takes b/c someday you will have that baby you want so bad.
(With DD#1 my PCOS wasn't fully under control and I lost my DD's twin at 6 weeks. I delivered her at 35w6d due to low fluid levels. She was 5lbs 10oz. With my twins I lost 40lbs and started to take Metformin (2,000mg). We did a frozen embryo transfer and both stuck this time. I made it to 36w1d (which is considered full term for twins) and they were 5lbs 4oz and 5lbs 3oz. So even a little weight loss and an increase in meds can make a big difference..)