Could I ovulate twice or is my sensor wrong?

Cynthia

So I’ve still kept testing because my OvuSense app is saying I’m barely in my fertile window but I know I feel like I ovulated the 28th of last month, can anyone interpret my chats because I kind of had two big dips and my test normally lose the second line the day after ovulation but they are still pretty visible. Could I possibly ovulate twice?