ovulation

Michelle
Very new to using ovulation tests. Now that I have gotten an LH surge, does that mean I'm super fertile now or within the next two days. My hubby is out of town and will be back by Saturday/Sunday... will I have missed my window by then? 
I notice when I documented my surge in the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> that it said I have a 23.5% chance of conceiving today??  Sorry guys. A little confused 
I'm posting a pic of yesterday's test as well as today's