Please share your wisdom!

I had a miscarriage in late December (21/12) and had to have a D&C; mid January due to complications.

After the D&C;, I was told that my period should return within the week or up to 4 weeks later.

Anyway, AF never showed up, and it wasn’t till the 25/2 that she finally did.

I started taking ovulation test to roughly get an idea of when I should ovulate, and actually had my peak the 3/3 (3 days after my period ended)

Also my cycle is normaly 28 days..

So what I need to know is, when can I test for pregnancy and why did I ovulate so early?

Please help 🙏🏻