I had to cancel an IUI round because I didn't have any follicles. My doctor said to call him back on my next day 1 and we'd try more clomid and go for it again. Well, I never got another day 1 and ended up concieving without the IUI. I would have concieved on CD 76...which is crazy. PCOS makes the cycles so irregular, it's hard to know when you will ovulate.

Wow that this crazy.. ! BUT CONGRATS anyway.. thats great!! :)

Even though I did not have follicles show up from Clomid, I wanted to chime in. My first cycle of Clomid didn't result in any follicles, so my reproductive endocrinologist upped the dosage and gave me that in combination with a low dose steroid, because that has higher chances of working. In my case, that didn't result in follicles either - but it might for you! Don't give up hope.
I just wanted tell you that, in my case, we did not get follicles until we went to injection drugs - which was a very scary step to me at the time. It's more expensive and the risks are higher, but it worked for us. It wasn't nearly as bad as I thought it would be.
I hope the Clomid works for you, but if it doesn't - there is still hope.

I took 3 cycles of 100mg of Clomid and it kept me pretty regular, but I also injected an Ovidrel pen mid-cycle to release my follicles when they were "big enough" The first cycle didn't really do much for me, I had to take it for about 10 days as well. The fertility place where we go only tries things 3 times and then they move on. So since the Clomid + 2 IUIs didn't produce a pregnancy we moved onto the injections.

It is really expensive (for the injection drugs) and you have to have a lot of blood tests and US to make sure you are not being "over stimulated" The first round for me caused my cycle to be cut virtually in half, my body produced a lot of follicles in a really short time. The second round they had me take a lower dosage and gradually increase. Eventually I was injecting for the first 10 days of my cycle.

There really is hope!

My first time on clomid (50mg) was given to me by my OB - there were no follow-up appointments and when i got my period they told me that it was not a normal period. A few months later I started seeing a fertility specialist who diagnosed me with PCOS.
They upped my dosage to 100mg and did the follow-up appointments and ultrasounds. There was a follicle the second time around.
You are at the very beginning of this journey (though I hope it is a short one for you) do not worry if the first dosage of clomid doesn't work because there are still plenty of options for you.

Good Luck!!