A little long but please read

I have been ttc for almost two years now with two losses. I finally asked my ob for help on cycle 15 she put me on metformin and a fertility diet I did conceive that next cycle however I unfortunately had a miscarriage. I am on cycle two after my miscarriage and have been using opks. I never got my peak reading this cycle only high fertility readings for almost two weeks. I am really discouraged about this cycle. I have been using opks for probably 6 months now and have been getting my peak on CD 14 or 15 every month. Is it possible I did not ovulate? Is it possible to still conceive this cycle?