Positive OPK 1.5 hr after trigger?!

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Ok so I’ve heard of testing out the trigger but has anyone ever tested on long until it shows on an OPK or preg test?! I triggered shortly after 6pm and took another OPK for shits and giggles at 7:50pm…and it was blazing positive?! Is this my natural surge or the trigger?! Also this was a subQ shot..