Pain and cramping yet still neg opk!!

Late last night and during the night I was getting a dull pain in my left side along with mild cramping...I'm sitting watching tv and saying to myself "hmmm I wonder if this means I'm finally ovulating?!?" The cramping still continued into the night and early this morning....yet when I took a test this morning....it still said negative!! Is it possible to have missed the surge if I did ovulate or would it still pick up this morning?? I'm starting to loose all hope and hubby has to travel again today