Anxiety Support Group
Anxiety is a physical condition marked by intense and persistent feelings of distress, fear, angst or dread. General anxiety caused by routine day-to-day stresses usually passes quickly and is experienced by almost everyone at one time or another. However, such feelings that linger over time and are very difficult to cope with, and which lack a clear cause, may indicate...

I think when you have anxiety problems, anything bad can magnify them. I haven't slept well since my husband lost his job in November, even after he got hired for a new one---he's been on it for two weeks and my anxiety builds when I don't hear about any feedback. Nothing as traumatic as what you went through, but the trauma and fear of it happening again are hard.
Have you considered a grief counselor? A pastor even who can talk you through this? I will send up a prayer for you.
I know how you are feeling. Hope it lessens over time. Mine does but it can get bad at times.
Best to you.