Postive OPK, but no period. Input?

I had a period, and on cycle day 17 had a +opk which matched perfectly with my egg white CM. Everything seemeds to fall on place. So here I am, cycle day 43! Negative hpts. But no period. Beyond late. So what happened to the egg? Where's my period. Can you ovulate and not have a period afterwards. Any input would be great, learning as I go.... ttc#1