How many days do you actually have sex in your fertile window? Just wondering..

I have been trying to conceive and focusing on my fertile week with my husband. I read on <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> that on average people have sex a little over 5 times in their fertile window. This was surprising because yes when you're 20 and single it might be every day but now with both of us working full time and with a 2 year old this is impossible. Average for us is 3 times a week. Anyone else want to share their average?