Late 12 days and no AF and bfn!

So my last period began Dec 27 2013. I was due feb 3. I average about 37 day cycles. I have had all the symptoms for periods of time over the last month, cramps, sore breasts, runny nose, headaches, nausea, metallic taste in my mouth.  The most consistent has been cramps almost every day. My temps have been kind of all over the place but consistently high for last several weeks. I'm in ga and snowed in and my dr isn't open. I plan on calling next week if I don't start. Tomorrow will be cd50. Anybody have any advice, or similar experience? Snowed and going crazy!