No not necessarily. You would usually ovulate around 36 hours after the LH surge. A luteal phase (from ovulation to AF) can be anywhere between 10 - 17/18 days and still be classed as normal. It's a complete myth that AF always arrives 14 days after ovulation (but the LH surge/+ OPK isn't ovulation)kara76 said:should af arrive 14 to 16 days post surge?