overdue but negative tests

Hi mamas,

I've had various pregnancy symptoms for about 2 weeks now, and I can tell really well that my body is acting "different" because I already have a beautiful treasure who's been walking around for 2 years.

I'm exhausted, have headaches, feel nauseous, the spot of my C-section scar is swollen and hard, my belly is hugely bloated, my breasts hurt a lot, and I also feel like I'm engorged (which I also felt when I was breastfeeding). I can't stand any smells anymore, even ones I normally don't have issues with (like poop, vomit...). My emotions are all over the place.

But I'm already 3 days late... normally I could pinpoint the exact day and hour when my period would start, but now nothing! Just a lot of white discharge. So I thought I'd test this morning. But I got a negative result.

So I'm asking for a bit of advice from fellow mamas who might have experienced this too?

Could I be pregnant? Or what's the reason my period isn't coming?

Cheers