Early in my taking of Copaxone, on about four different days, I did have rapid heart beat after injecting myself with the Capaxone, but after I lay down, it went away. I haven't had a reaction in a long time.
I, too, am scared to go to Poland, but I also think that I've had this disease for a long time, so I might as well give the treatment a chance. I think, if your disease is not far advanced, that the treatment will probably be okayed for Canada in a few years, and then you could get it here. But, your Dad lives in Poland, so he might have information that would be useful to you. Good luck in your decision.