I would recommend that you look at a website called Drugs.com and see if hives is a side effect of the medication you started taking.
I was diagnosed as being anemic many years ago and haven't had the diagnosis since. You may want to look into eating foods that would up your iron level.
Good luck to you.
Fibromyalgia, CFS, MCS, scoleosis, herniated disks, spinal stenosis, osteoarthritis, sjorgens, sleep apnea, asthma, allergies, headaches. On a regiment of different supplements including sleep supplements. I eat nutritiously and do not eat foods I'm sensitive to and ever since a back injury triggered my fibromyalgia, I have been doing prescribed stretches twice daily.