I have those same types of anxiety reactions associated with memories. My birth mother died in a car accident when I was 18 months old and I still to this day will stand in the cemetery and cry for the Mother I never had a chance to know.
Also my Dad and Step Mother died along time ago so when I go to put out the flowers on Memorial Day I feel so sad and cry as there is no one, no family for me anymore in my home town. I see all the old sites and think about how I don't belong there anymore. My childhood home has been gone a long time. I was an only child.
So I think your pretty normal to react to the visit and the memories by feeling anxious and sad too.
Gentle hugs. You have a right to miss your Mom and I will say a prayer for you and for her.
Moderator Anxiety ~ Panic Disorders
*~* Not a mental health professional at all *~*
Dx: Anxiety/Panic, Depression
"If you doubt you can accomplish something, then you can’t accomplish it. You have to have confidence in your ability, and then be tough enough to follow through.”