On sunday the 15th June when i woke up my patch was missing(I suspect it fell of when i was sleeping the previous nite).I tried to reapply it but it was already dry.Then I decided not to apply a new one since my change day was gonna be on wednesday(18th) and my last intercourse was on the 5th June..now my period are notcoming and its 5 days now ..could i be preggies..is that posible