So this has never happened before. Positive OPK CD 12?

[LittleBunnie]

Yesterday, I had what I think is a positive? I was really hoping to hold out until CD 14-16. I did take Soy Iso this cycle so I'm not entirely sure if that may have messed with my cycle? I usually have a 28-30 day cycle and in my 2 years of using OPKs I've never had a positive this early. Weird?

https://i58.tinypic.com/adewrd.jpg

Also I did another one this morning to see if it was maybe a bad test but it looks like my LH is starting to fade out. We did manage to get 2 BD sessions in yesterday, and one on Monday (CD 9) I'm wondering if that was enough?