Help!!

Mariana

So I noticed today I had brownish discharge on my panties. I searched it up and it says the it could be early pregnancy sign, it happens several days before my period, or a normal thing after plan b. I did take a plan b like a week ago. My period is supposed to be in 5 days, and i really haven’t had any symptoms other than a headache but I think that’s from the stress I’ve been having lately. Please help I’m so confused.