Missed period negative test

Caitlin

Hi all, hoping to get some advice, We’ve been trying for just over a year. I’ve had really sensitive/sore nipples for the past week, I’m now 2 days late for my period but got a negative pregnancy test.

Could this be because I took the test at lunch and the HCG was too diluted or am I just late 🤷‍♀️😩

Can’t work out why my boobs would be sensitive if my period wasn’t coming and I’m not pregnant?