2WW---NEED HELP PLEASE!

Christina
Today is my 3DPO, I'm lesbian and this is my wife & I first time TTC'n. I started my OPKs on CD8 & then on CD12 it began to get darker. On CD13&14 lines were evenly dark. On CD14 I had my <a href="https://glowing.com/glow-fertility-program">IUI</a>. On Monday, 2DPO my wife told me to take a OPK to continue monitoring and it came out NEGATIVE, but today 3DPO, this morning it came out POSITIVE....if anybody is going through or have gone through it please give us your insight. We're worried we missed our actual <a href="https://glowing.com/glow-fertility-program">IUI</a> timing.