Pos opk but no fertile week for April?

Lindy • Happily married since Dec 2012. TTC #1 since Feb 2014. Found out on 6/13/14 that I am due 2/15/15. We are overjoyed!
See my march and April calendars. AF on March 12....pos opk on March 27th....but no AF for April 12, but pos opk today, April 20th. I entered the info into Glow but my fertile week for April hasn't appeared. Advice? Just keep logging?  

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