By the afternoon today, the positive test for the OPK was gone... what I was watching for the rise, and then ended up being the drop, of HCG.  I was disappointed, but it was ok.  At least I took it as the drop of HCG, but in the back of my mind I wonder if maybe I did ovulate - in which case I'm glad we did the insem.  At least there will be no wondering.  No "what ifs", something I still have plenty of regardless.