Anxiety about severing the ties with my parents

I have been told by many different therapists that if my parents could not be nice to me and not emotionally and verbally abusive then I shoud cut the ties so I did.  April is a bad month because both my parents b-days and their Anniversary is in April.  My mom's B-Day is coming up and I sent her a  plain birthday card.  I am afraid of the consequences.  I am sad tha t our relationship ended up having to happen this way.  I am dealing with alot of anxiety feelings and symptoms.  Please respond I need a hug.
Becky