How do you know when your anxiety is turning to depression?

I still have all the physical symptoms of anxiety (heart pounding, shakes, headaches).  My Mom made a comment to me on the phone today that the headache I've had for a few days is probably stress related along with some depression setting in. How do I know if my anxiety has escalated to depression?

I think Fish is right, along with being tire for me. Also irritableness. You just don't feel like doing anything and like said above, crying a lot and not enjoying the things that you normally like to do. I sleep a lot when I am depressed. Don't want to talk to anybody and everything is even harder than before. I turn into a hermit.

I hope that this helps.
hugs, Karen

For me, it is hard at times to find the difference between my anxiety and my depression. They really do go hand in hand, but I know that I am depressed when I have constant negative thoughts, cry all the time, don't feel like doing the things that I normally like to do, etc. If things don't get better do not be afraid of trying to get some help.

Thanks everyone for your answers.  I'm fairly sure I'm past anxiety and into depression.  I got more bad news today about my job and it seems like it may be eliminated a lot sooner than I thought.  I had put in a transfer one week ago for another job and it seemed so perfect and hadn't heard from the HR person and called today when I got home only to find out the positions were filled.  How can they not even call the people that put in for the transfers.  I was really counting on one of those positions and there is nothing else available right now that I am qualified for.  I am worried and sad and crying and just generally down.  If I lose my job, I lose my health insurance and the ability to support myself or pay for my meds, etc.  What am I gonna do?!

I think I was depressed b/c my anxiety was constantly making me feel sick, and I never got a good nights sleep. It made me emotionally unstable. I cried all day at work one day in my office. I cried all through thanksgiving with my family. I was just so tired and thought I was going to die. I was sick enough to know I needed help, I would have swallowed anything at that point to feel better. And Finally I did :)

I kept insisting to my Dr. that I had some disease that was making me feel so bad...but I did not feel better until I started AD's. So, anecdotally, my sickness was anxiety...probably causing depression.

Believe it or not Ocean, another job will become available just when you need it. And don't be afraid to take a position that you may not have thought of before... sometimes change is a good thing. Hopefully you live in an area where you can apply for some interim assistance if you loose your insurance for a time. It's very important to make sure that you are taking care of you. Especially when you are going through a period of change in your life. Good Luck!!

Liz