Hi. Thanks for your query. Read the history and understood the problems. Transforaminal epidural was given, now has spinal headache, ask to drink caffeine, there is pain on side and stomach too. The probable reason looks that while giving transforaminal epidural, there might have been a trauma to the nerve roots and that is causing the symptoms you have. The leakage of the spinal fluid causes headache. I Would advise you the following: Admission to the hospital for Intra-venous fluids, antibiotic in anticipation to avoid a secondary infection. Caffeine is given in the tablet forms so that you get a nice control;. Bed rest in the hospital can help the best.