Very very early symptoms?

Has anyone ever had symptoms as early as 3 and a half weeks?

I’m 12dpo and got a positive test 2 days ago and feel like I’m already having some symptoms. But I’m not sure if they’re just in my head?

I feel a very very mild nausea and lots of cramps. Also have had some pretty intense night sweats the past few days.

Could I be having symptoms already?