PCOS & TTC questions

We have been TTC for over a year. Fertility doctor says I have pcos after doing a blood test. He says my ovulation is very low if I do ovulate at all. My periods are regular (28-32 day cycles) 90% of the time but I have short periods that are usually only 3 days. We have attempted one cycle of clomid which did not result in pregnancy. Fertility doctors jumped to trying IUI next. I’ve seen there is different fertility medications and even higher doses of clomid. My questions- Should I give up on clomid already? Has anyone had success with pcos and clomid after several attempts, higher doses etc? Does anyone have success stories with letrozole versus clomid?