Don’t know what to think!

I’m on day 4 of period being late (17dpo), 3 negative tests.

For my son I got a positive 4 days before I was due on.

I’m pretty regular, cycles are anywhere 29-32 days, I’m now on day 34.

Normally 1-2 days before my period I get pink/brown spotting but I’ve got nothing.

Symptoms - headaches, waves of nausea,bloating, tingling nipples, cervix is high, firm and closed, white creamy discharge.

I don’t know what to think!