BFP using OPK

Al

Ladies this is my first month TTC baby n4, and i was wondering how long did it take you guys to get a positive pregnancy test, after gettin a positive opk? My fertile window started on the 10th and i had sex everyday from the 9th to the 15th, got a positive OPK on friday 14th. But now im super anxious... pls help with positive stories!