Feeling sad and confused.

According to the app, I'm not supposed to take a test until Saturday, but of course, I did and got no line.  Period may come Monday. I was feeling crampy this morning and had egg white viscosity discharge. I have also had a pain in the middle of my back (b/w my shoulder blades) for the past 2 weeks, the likes of which I have NEVER experienced. 11 DPO. So to sum up, cramps bloating, fluttering, neck/back pain, egg white discharge.  Has anyone ever had these symptoms leading up to pregnancy?  WHAT DOES IT ALL MEAN?
I feel like I'm making myself crazy.