Ovulation advice

Mrs R • Mid 30s desperately ttc baby no1

Hi girls, your probably sick of my questions.

Today is day two of clomid 150mg. I didn't ovulate with 50mg and I have never in my life ovulated before!

So I was using clearblue opk. Just got cheapies now? Is this a mistake?

Any advice to check for ovulation? Doctor just wants opk. When should I start checking?

I can't rely on temp due to under active thyroid

So desperate for this to work!! Been trying for years!!