I feel like CRAP!

Okay Ladies...I am pregnant for the first time and a little nervous.

Google is a great and holy God, but damn...sometimes you need to just stop looking. So hear is the scoop: I am just about 4 weeks, and up until today had fairly mild pregnancy symptoms: headaches, increased appetite, and more burping. I have also been spoting for a straight week+ mostly light but a range of pink, brown, and red. I called and scheduled an appointment with an OBGYN for the 26th and the receptionist didn't seem to concern with the length of spotting. Today, at around 2pm I starred having cramps similar to period pain in the middle to begin with...then to the left. They seemed to get worse as I was getting ready to leave work and now from my abdomen through my left pelvis down to my knee hurts. And I feel miserable. My spoting is medium/light red with some clotting material. I just need some reassurance here...is this normal?