Instantly Knew!

So last night on cd10, hubby and I DTD. Be mindful I am not set to ovulate until New Years Day..well after we were done I tried something different and laid on top of the pillow on my stomach for about 15 minutes and I guess about an hour or so later, I felt a quick little pinch! Instantly my thought was: "Yep, I'm pregnant!" This cycle I'm using the Mucinex method and praying for the best! Has anyone tried the Mucinex method or known immediately the moment they got pregnant?! I can't test until the second week of January but I feel so good about this cycle!!