3/31 or 4/2 who knows which one is correct. Cycle buddy?

Fanistar • 2 boys ⚽️ and now a girl 🌸 My husband ( who wants an open marriage now that we had our baby 😤) and I have been TTC since late August 2017. Had a miscarriage in February 2018. Found out I was pregnant again at the end of March 2018. I'm broken but happy I

Not sure which calendar is correct but it's either the 31st or April 2nd. Who is with me? I did t baby dance enough but we will see.