How much sex do you have during fertility week?

Rebecca
I am 32 and got off birth control in December. We have really been trying since February to get pregnant with no luck yet. During my fertility week we have had sex 3-4 times or every other day. Last week was my week and husband got frustrated with me because I kept on him we needed to have more sex and I was ovulating. He said I was stressing out and it felt like a chore for him and we need to let it happen. 
Anyone have similar experience. I try not to stress but I have waited to get pregnant and now I'm ready to have a baby . My husband is 45 and we are both not getting any younger. So back to main question how often do you have sex in your fertility window? Thanks