Help!!What is wrong with my calendar

Samantha • I have a son, 👩‍👦Karter, who is 1.5yrs old. He is my life! 💝 & I also have a daughter who is my little Angel from above, 👼🏼Kassidy, who would be 3yrs old now 💕

I put that I had sex on the day, but the heart doesn’t show up on my calendar.. so I can’t track when I’ve had sex. Why can’t I see it!!