How can I Delay my period/ ovulation?

hello I'm ttc after a miscarriage. however I need to delay my period. AF IS DUE Nov 7th but I need it to come AROUND Nov 14 SO THAT I WILL BE FERTILE NOV- 27-30. I HEARD THAT SOY OR PREGNACARE CAN DELAY YOUR PERIOD. SHOULD I TAKE PREGNACARE THEN STOP BEFORE NOV 7? ANY ADVICE IS APPRECIATED.