Sorry about pictures but please help

So I was supposed to start my period today. I had tiny little pink discharge like 3 days ago . And today my AF just didn’t show up . I’ve just been to toilet , and could you tell me what’s going on please ?

Is this discharge okay ? And could it be a sign of pregnancy ?

And it was also a bit brownish/yellowish when I wiped my finger on a paper ..

Vote below to see results!