10days late negative tests?

hi i just took another first response early test and it was negative! i hve been off the pill for 2 months and 2 weeks after i came off the pill i had my normal cycle period and i was due for my period 10 days ago and for the past week or so.i have become exhausted, are tender, sensitive, extremely darker areola, blue veins on s, lots of gas which comes along with heartburn, dizzyness, sensitive smells, bloated constantly, lower abdomen cramps like period cramps but no period, but negative hpt results? anyone got any experience with not getting a bfp over 10 days late???