Can you ovulate sooner than expected??

So my app tells me I’m supposed to ovulate tomorrow 02/17, but last Friday 2/12 I was having like lots of CM come out and with pink spotting. And I’ve had CM pretty much every day since then. If you do spot, does it normally happen right when you’re ovulating or before you ovulate or after? Because I feel like I might have ovulated sooner than what my app is telling me 🤔