Advice please :)!

Kirsty

So I was on my first proper period after having the implant out, from 6-15th of Jan, it says on here I ovulated around the 19th, but I didn't start getting heavy cervical mucus till about the 21st. I'm due on again around the 1st of Feb to the 6th. Just wondering when is best to test and could I have ovulated later on in my cycle? I already tested yesterday and it was negative :( just hoping I'll still get a positive this month 🤞🏻🙏🏻❤️