Positive opk on letrozole. enough BD?

So today I got a positive opk it’s getting darker as the day goes on! My husband and I BD twice Thursday, last night and then today at like 10:30 but I didn’t have a half hour to flip on my head or put my legs up because my daughter had to be at swim lessons at 11:15 and she was still downstairs playing. So I only had 10minutes to flip upside down. Do you think we still have a fair shot? We plan on BD tomorrow night but we won’t have time to do it tonight or during the day tomorrow. After 2.5 years I just want this to be the month and am freaking out we will miss it. This is our second month after getting my right tube removed. 😞 any in sight please! I know you don’t have to stand on your head or put your legs up but I see a lot of women saying that’s what helped so at this point I’ll try anything.