Day 17 of late period.

Still no AF & I swear up and down I feel like I have a bun in the oven - just based on instinct and pg symptoms. I'm now 17 days late and every hpt test I've taken has come up blank (see previous post) and then turns pos. Not trusting them; HOWEVER I can't get into the Dr until Monday and it's killing me!! Need some tips to calm my emotional ass down lol.