Clearly negative..

I took an OPK even though I have my ultrasound tomorrow. I have been having a terrible backache for the most part of my day and very strong pains on my left side and some minor ones on my right. It's a surprise to me because according to the RE my left side follies didn't look like they would mature at all, maybe they are just growing and just won't make it? In any case, I have my ultrasound tomorrow morning. We'll see what happens but truly I hope we've gotten somewhere because this wait is pretty crazy! :-