How will I know how many days the egg/ovum has been released?

As a fellow clomid user, I first want to say congrats on ovulating. That is very exciting! Yes tenderness can be a sign that you ovulated so it might not be too late. It would be hard to tell. Did you also have EWCM to confirm that you were about to ovulate and are you taking your basal temperature? Those would make it much easier to determine when you did in fact ovulate. If you aren't charting and don't get pregnant this month, I would suggest you start. I know clomid's not cheap and you don't want to miss out on an opportunity especially since you can only be on it for so many cycles. Good luck. I hope you get your BFP this cycle.