I am really sorry for what happened to you. I can’t imagine how you are feeling right now. Truly I wish your heartache could go away and you could feel better.
If your heart hurts physically, I think it is best for you to go see a doctor. It is possible that citalopram causes the side effect of heartburn, which may or may not be what you are experiencing now. If this pain does not go away or even gets worse, please tell your doctor.
Again, I am sorry for your loss, and I sincerely hope you can feel better soon.