How are you feeling today?
Couple of things......
I have that same upper chest pain that you described earlier in your post. I told my doctor and my gastro doctor about it. They told me if you can put your finger on the pain (meaning it is one spot located) then it is usually something MUCH LESS threatening as a heart attack.
My gastro doctor told me that when you start to feel anxiety, stress...your stomach acid gets going and can cause chest pain (gerd) or gut pain. It is just symptoms of anxiety.
As for your mom, how is your relationship with her? It would be wonderful if you could just go over there and tell her how much you love and need her and share with her. You can hold one another up and be each others support. I know my mom is also my back bone but she has been through depression and I wanted to scream "Do not do this to meeee!!"
And I had to hold her up for awhile.