Help!

T2 • 37 TTC# 2! Have one beautiful happy 13 Months Baby Girl!
I don't know what is happening right now and i am completely freaking out! I am still in habit of temping, so temped this morning and i got low temp which freaked me out!! Then I took the same ept and Clearblue test again and both are showing "not pregnant"! I just tested Wednesday/Thursday and doctor also confirmed by blood test Friday! Shouldn't it be doubling right now? Am I losing the baby? No bleeding yet but is it on it's way? What is going on? I am freaking out!!! I called my doctor's office and looks like they are closed today! I'm not sure what to do at this point 😔