I'm sorry you've been feeling so lousy. You can see any doctor about how you're feeling. If you need to see someone immediately, is there a walk-in clinic you can go to? Alternatively, you can always go to the hospital and see someone there.

As for your symptoms, yes, depression can cause them, but so can a number of physical ailments. Some physical problems even present with depression as a symptom. There's simply no knowing until you get checked out. Make sure you tell the doctor exactly what's bothering you -- headache, stomach ache, low energy and low mood, etc. It can be really scary. I brought my best friend along with me when I went. Is there a friend or family member who could come along with you for moral support?

The good news is, if you have depression, it's highly treatable and there are lots of resources out there to help you deal with it, including this forum. Please do keep us updated on how you're doing.