How Long Does The Epidural Steroid Effects Stay In The Body?

Hi, may I answer your health queries right now ? Please type your query here...two weeks ago i had an epidural steroid injection and its been 3 weeks since i took methyprednisolone 4mg dospak 21's... ll to relieve sciatic pain from a herniated disk at the L5 S1 region..... since then i have experienced rapid heart rate as well as high blood pressure i was admitted to the hospital twice for observation. I sustained a head injury almost three years ago due to a fall. since then i have been unable to return to work due to migranes, dizziness and balance issues. I am unable to take my old medications such as Effexor and Butlbital with caffine and codeine 30 mg. Any pain medication, including Tylenol increases my heart rate. I dont know what medication i can take to help with my migranes and how long will the ill effects of the steroids last..