Could I be pregnant?

Ne`Toshia

So here lately I've been very nauseous, some vomiting, fatigued, and moody. I thought I could be pregnant, but I have took 3 pregnancy tests and they have all came back negative. I'm still having these symptoms. I would only be 2 weeks 5 days so in reality 4 weeks 5 days. Could I still be pregnant and maybe I'm just getting false negatives?