I had two cortisone injections a 5 days ago, in my left shoulder for Bursitis and arthritis. I have had terrible bloating, and pain in my stomach since that first day and now, dizziness and nausea today. I feel weak and very tired. ( sleepy) i am not a sleeper, i am usually very hyper and full of energy for 44.  I was happy to read that i am not the only one with these side effects.  My doctor did not tell me of any side effects like these. I had 3 injections 3 yrs ago in my lower back and it worked like a miracle! I do not remember having these effects that time. I am convinced after reading these posts that it is definitely the injections.