8DPO test again in a few days?

Elizabeth • Student and former nanny and daycare attendant. Just making my way through the world learning and teaching
I took a Clear Blue with weeks estimator HPT this morning....it was a bfn which kinda bummed me out. This is month one TTC.....should I test again in a few days? AF isn't due until next week and I've be nauseous, moody, crazy hungry, and getting small headaches accompanied with insane fatigue.