My Husband Became Very Dizzy Last Week. His Dr Gave

My husband became very dizzy last week. His dr gave him a steroid pack and a Z-pack because meclizine for vertigo didn't stop the dizziness. He's still dizzy, and now since last Saturday he has been urinating clear urine excessive times a day, having lower back pain, which he's had for a few years, stomach pain and cramping after eating, confusion, and has noticed blood in his stool. He had his first spinal injection for the back pain last Wednesday, but his spine dr said these symptoms are not from the steroid shots. I'm very worried and we hope to get him in to our family doctor tomorrow.