Worry about possible job loss can trigger anxiety as well as depression (stress intensify these underlying feelings) The lack of sleep is something that has to be addressed. It s not clear if you are still on any medications at this time.
There are alternatives besides medications that aid in sleep such as GABA, Melatonin, 5-HTP, Lemon Balm (to mention few of these) It is best to always consult with and MD if any of these are of interest to you. Other alternative options would be hypnotherapy.
If you have not tried cognitive behavioral counseling (it is quite effective in addressing anxiety)
The best place to start is to consult with a psychiatrist who can evaluate for medication for your physiological symptoms of the anxiety and to manage the disrupted sleep.
With proper treatment, anxiety is highly manageable.
Relieve Anxiety with Medical Hypnosis by Steven Gurgevich (Audio CD - Jun 1, 2007)
Anxiety & Stress Reduction by Eric Zeisler (MP3 Download)