Too early to tell

So I am still around 5 days before my period. I took a test and it said negative. Do you think it is still too early to tell or do you think that I should just mark this month as a “no”?

I have been super nauseous for days and have been so tired. I have also kept a migraine. I take meds for migraines but my medication normally keeps it in check.

What do you all think?