Lh surge questions please help

Ok so I started using lh tests for the first time because me and my husband tried for a baby last month and I didn’t get pregnant so I figured maybe I didn’t ovulate on the days my app predicted, so I got easy@home lh tests to see when am I really ovulating. Turns out I was right, and got my lh surge wayyyy later than the app predicted I would. So I peaked on the 27th and it is now the 28th and my lh is starting to go down as you can see in the photo, does that mean I already ovulated? Like is the egg waiting there to be fertilised? Is it gone already? I know they say the egg lasts for 12-24 hours but I’m not super sure exactly what day it was that I actually ovulated because my lh was high for 3 days. So what does it mean once lh starts to go down? I’m worried I won’t conceive this month because me and my husband didn’t have sex on my peak day because we had sex the day before and he has a super low libido and never wants sex 🤦🏻‍♀️or he watches too much porn, who knows. So it’s like pulling teeth to get him to make a freaking baby with me. Please help what does it mean when lh starts going down? If I have sex tonight do I still have a chance? My peak was yesterday. I also had cramps and EWCM yesterday