So confused! Help😩

So the past week or so I’ve have felt nausea on and off, curtain smells have bothered me, I’ve been constantly moody and way more tired than I usually am! I’ve also had a blocked nose which I’ve just learnt could be an early pregnancy sign.

However af was due yesterday, I had slight brown cm the day before, nothing the day at was due and then today light blood once when wiping. I took a test this morning which was neg.

Now I’m just a bit confused and not sure what to do next.. Tomorrow I fly to Spain with work hence why I took a test today (thinking I’d have outcome) but don’t know where I stand still! Like could I be pregnant or am I out? Has anyone ever had anything like this!! If I had more bleeding I would have believed he test however I’m never usually later and af is usually fairly heavy!!

Hellppp 🙏🏻