Reaction to Nuclear Stress Test?

52 w f. I had open heart surgery July 2007 left main artery.

. In the last few months fatigue, dizziness, angina but due to change in insurance I could not go to a doctor. Now I'm covered by insurance again.

Today I had a nuclear stress test. As soon as the dye was injected I felt palpitations I have not felt in months. I asked the nurses they said it was not the dye.

I finished the test and went home. I had a 3 appointment but canceled due to fetigue. I went home and slept two hours.

I am having pressure and  upper back pain in the shoulder area and extreme dizziness. I felt I need to go to the hospital.

My dh says I have been twice in the last 6 months and no heart problem was found so I need to stop worrying.

Do you think the pain I am feeling is a dye reaction.

Thank you