Possibly pregnant?

I am about 3 days (11 dpo) from my expected period and I’ve been feeling very off since about 6dpo. Non stop headaches dizzy spells little cramps and twinges and I only crave certain foods and everything else I eat tastes bland like it needs more seasoning or something like salt.This morning I noticed light brown spotting in my CM only when I wipe not on my panty liner.Could I possibly be pregnant?

*UPDATE*

Sorry, but I should be more clear. The headaches started at 6 dpo and got worse and worse. I started getting my other symptoms a couple days ago.