I need help

Alyshia 👼🏻👼🏻👼🏻👼🏻🤱🏼

I have been TTC since April after my miscarriage. For the last three months I have used ovulation kits. This month I had a peak on the 4th. But I also had a peak last month and had sex around that time and was not pregnant. I’m very discouraged. Am I doing something wrong?