I have a question about CLOMID...?

So I have irregular periods, and not ovulating so my OBGYN has put me on Clomid. I have to take it on days 3-7 of my period for 5 days and then I have to make appointment for a sonogram on the 14th day. My doc said I should start counting day 1 even if I am just spotting, so anyways tomorrow is day 3, (and I am indeed only just spotting) so I am taking my first pill tomorrow. My question is after the 5 day is up, when will I ovulate and when will be the best time to try? Grateful for any answers...thank u.