We can not give medical advise, however from what you are experiencing I personally if it were myself, call the doctor and make an appt. I can not speak of experience of z pack, as I happen to be allergic to it. I get severe adnomal (sp) pain and cramping, as well as hives. So I stopped takng it years ago.
~Moderator - Allergies & Asthma , Alzheimer's~
"The Walking Medical Mystery"/~Medical Caregiver and Doctors Worse Nightmare~/ And Doctor's Worse Nightmare DX: Lactose Intolerance, Gluten Sensitive, ADD, Fibromyalgia, Carpel Tunnel, Arthritis, Clasterphobia, Anxiety, Diabetes Type II, Grave's Disease, Tachycardia, GERD, PCOS, Migraines, UARS, Anterior Scleritis, Orbital Tumor