Too early?

Sarah • Only been on glow for a few months but really enjoying it so far. I have been with my partner for almost 6 months and honestly never felt this way about a guy before he just has my heart completely
So I have a 33 day cycle and I'm always regular for my period, my partner and I have been trying to conceive for the last 3 months so this is my question, I have been getting pregnancy symptoms such as nausea (sometimes extreme) sensitive nipples and fuller breast, lower backs and cramps but I am almost 2 weeks late for Af and I've taken at least 4 hpts and negative and also had a negative blood test, could I possibly be too early and still be pregnant?? Don't be nasty please I'm just confused 😕