Help! Was that my period?

Autumn

So I was due to get my period 2/21

On 2/19 I had a little brown discharge that was mucus-y

On 2/20 I had a few very dark blood clots (almost like brown again)

Nothing on 2/21 at all

And now today CM is raw egg white sticky and a lot of it

Was that my period? Was that implantation bleeding? Could I be pregnant? What’s happening?!