When to test? 1st round clomid

I have fertility problems, pcos and endometriosis so falling pregnant has always been hard.

My dr put me on 50mg clomid, this is the days I took them.

The week of the 2nd I had ovulation pains, then from the 7th I have been feeling ok. Other than hot flushes, headaches and what not.

Today and yesterday I have had slight cramps, nothing major.

When would be best to test?

The app ovulation dates are never correct for me.