So many questions! Please help :)

So many questions running through my head about my chart! It looks like it is possible that I ovulated but I don't think I have yet. I used OPKs the last 3 days and they have gotten darker each time but definitely not positive. Also my CMhasen't been egg white or watery. Is it possible for a temp spike that much due to stress? Also if I did ovulate do you think the BD timing was good?