Irritable bowel symdrome symptoms and conditions

I just received a kenalog injection a week ago when I went to the doctor for sinus problems. My regular doctor was not in,so I saw a different doctor who is an allergy specialist.He spent a whole 60 seconds with me and stated that I needed an injection of kenalog.I didn't question him,as I knew that kenalog was a steroid and I had taken oral steroids before with few side effects. The injection itself was not painful,but the next day,I felt terrible and have ever since.I ache,I feel very nervous and have been crying for no reason. My blood pressure is up.I have weakness in my muscles and heart palpitations,and a constantly upset stomach.I also have had a flare -up of irritable bowel syndrome and yet even with the stomach and intestinal pain,I cannot stop eating.I am also constantly thirsty and have excessive urination.I have a pins and needles sensation in my hands and feet and I have blurry vision and confusion and forget things easily.I have trouble typing,as I have to spell-check everything.I am going crazy wondering how long these side effects will last.I am the primary caretaker of my mother,and I now cannot take care of myself.Why do they not tell a person of the possible side effects? I would never have let that nurse give me the shot had I known that it could cause such horrid side effects. And my sinuses are no better.I have an infection and now need antibiotics,which is what I told the doctor in the first place.I don't know what to do,I feel like I am going to die.