Clomid work for you?

I was diagnosed with Amenorrhea (lack of periods) I'm super irregular. So I took Clomid 5-9 on CD21 now. I've been Opking and it seemed as though I ovulated on CD17. I had sex every other day before ovulation and on the day of. Is there a BIG chance I will conceive? Did Clomid work for any of you ladies?