Implantation?

Today is 14dpo, and I am 3 days late. I noticed a little brown spotting last night and this morning as well as cramping just on my right side. Now the spotting is gone and I did have a little more cramping just on that side. Last night I woke up drenched in sweat. This morning was dizzy a lot, had lots of bleeding when I brushed my teeth, metallic taste and sore throat all day. Now horrible bloating and huge appetite.Test shows as negative. Could I still be pregnant.

Btw, this is my first month ttc and first month off birth control pill