What’s happening?

It’s CD 16 for me today and I’m having sorta like AF cramping and my bbt has been 97.2 for 2 days (Kind is low for me I think). Yesterday when I used the bathroom and wiped, there was like brown spotting on the tissue. I’m sure it’s too early to test. Do you think I’m having ovulation cramps? This hasn’t happened to me before some I’m kinda confused 🤷🏽‍♀️