IM 7DPO if i ovulated when my opk was positive

well ladies im 7 DPO if i ovulated when my opk was positve which was on the 13th on the 17th i felt wet and slimy so i checked myself and had Stretchy clear CM so not sure what day i ovulated but i know it had to be between these days. well i took a 88. test from walmart this morning about 5:00am and it came out negative and i retested 9:40am with a E.P.T test from walmart and i see a VERY VERY

faint line.... IS IT ME OR IS THIS REALLY HAPPENING?????😮😮😮 CAN ANYONE TWEEK IT FOR ME PLEASE!