Methylpred DP and vomiting

Methylpred was administered by injection to one of our cats at our local small animal hospital, to help change his mood and discourage him from biting his tail. Upon returning home, the cat behaved as though partially sedated, lying quietly in an out-of-the-way location. Because we expected some change in behavior, and because we have several other cats in the house, we did not pay particular attention to this cat. During the second night, between 24 and 36 hours after the injection, he died. He exhibited no signs of convulsion, vomiting, or sounds of discomfort. Although moderately overweight, this cat appeared in good health. We suspect heart failure, following increased blood pressure.

I'm 18 and just put on Methylpred for inflamation of the brochial tubes. The first few days went okay but i took it today for the second time and within 20 min i was vomiting and short of breath. I left work for home and had to stop to vomit again. But the time i got to my house my heart was beating so fast i thought i was going into congestive heart faliure. Is this normal?? I'm afraid to walk or even move, what if i cause my heart beat to go up again.

My husbands takes Methlypred 4mg Pak. He has taken for a two days and he has 4 more days left. The pills has made him sick of his stomach. Vomiting and diaherra..