When am I ovulating?

Katie • 33, married, just got our BFP for #1 with the help of ART for PCOS. So excited (and terrified 😛)!! ✨👶🏻🍼✨
My cycles are between 30-35 days. I did fertility tests last month, and it said my "high" lasted 8 days before finally hitting "peak." This month (today) I'm on day 4 of "high," but Glow tells me I'm ovulating today? When should I have sex to increase odds of conceiving? When am I actually ovulating? Anybody experience anything similar?