Yea I'd say it would probably be darker tomorrow. If you get a line as dark as the control it means you will be Oing in the next 12-36hours. So yes, get to BDing!!
Ohhh Cckarting! I didn't realize your hubby was away! That kinda sucks! Well I know in August I had some weird bleeding. I figured I was about to O, but I didn't know then that my cycles are about 40 days long, so couldn't have been O bleeding. Hummm, based on your chart, doesn't really look like your Oing. I'd say just give it a few more days. You never know, the IRB may not have anything to do with O. I really hope you catch that egg!