Is Magnet On Shirt Be The Cause For Elevated Heart Rate And Dizziness?

I had a very strong magnet type ID pin on my left side of my shirt. After I put it on, I became very dizzy. About 3 hours later, I removed it and after about 1/2 hour, I was no longer dizzy. Could this have impacted my heart rate and caused my symptoms? I have no history of a heart condition.