I started taking Bystolic 5mg approximately 3-4 weeks ago. I have bumps in my stomach, back and hands that start as a watery looking blister. I am very itchy on these areas. Also, my urine is a bright yellow with a strong odor. I have noticed my left arm is weak, with my little and ring finger having a tingling, numb feeling. I seem to be tired all the time. Are these reactions to the medication--what should I do?