Did you know you were pregnant, despite negative hpts?

My period was due monday , and it has yet to come. I have symptoms such as all day nausea, sensitive , heavy , not tender but achy , frequent headaches, metallic taste in my mouth, more saliva, dizziness, light cramping, sensitive to smells,consistently high bbt, not liking some things that I love, tired all the time, emotional, and I'm sometimes snappy. I took a hpt Wednesday morning and Saturday morning, both BFN. The test says no, but my intuition says yes. Anyone experience the same thing, and really was pregnant? BTW- last year I was pregnant and I tested at 9 days late and still got a very faint BFP.