Could I have Psychological Nausea?

So about 3 or so years ago I was diagnosed with an anxiety disorder, They had me on Prozac to combat this problem and it was seeming to work until I started to get really nauseous and paranoid about being sick to my stomach. They then up'd the dose and it seemed to do the trick for years. I then got off of it a couple months back this year and was feeling better than I ever did. Then this summer I started to have panic attacks which would cause heavy breathing and heart palpitations, So I saw a doctor and I got back on Prozac and it stopped the panic attacks, I then started to get real nauseous, This was about a week after I started back on Prozac so it was not a common side effect from the drug. I went to see the doctor and he thinks it was food poisoning since I got a little sick from eating some improperly thawed meat, But I was only sick for a day and I actually vomited, The doctor then gave me Tecta pantoprazole magnesium to help with the nausea but I don't think it's working. So what could all this mean?