I Have Been Feeling Like My Heart Is Beating Fast

I have been feeling like my heart is beating fast and i can feel it. I feel a little short of breath and very anxious. About 2 months my x husband committed suicide because I would not take in back into my life he was an alcoholic. I was really mad at first now I cry and feel like I can't cope with everything. Should I be worried about heart trouble I am a 61 year old woman.