Pregnant?

Brianna
Okay ladies. I am 6 days late for AF. I tested 3 days ago BFN. Anyhow. I'm starting to think I am pregnant. I woke up nauseous the other day, but it went away quickly. This morning, I woke up nauseous and clammy. I've also experienced a lot of very creamy, white CM (more than usual) and headaches. 
My first pregnancy, i seemingly didn't test BFP for a week after expected AF. But I just am not sure. Any insight?