Still BFN,😔

Well I am officially late which I never am and still no AF not even spotting which I usually do for about 4days before she shows her ugly head. However I am still experiencing pregnancy symptoms like cramps nausea sore nips bloating and constipation (tmi sorry). But got a BFN on the first day of my missed period now I am 2 days Late should I wait a while or take another test? Help please