I've had shingles and it sucks. Same symptoms at first with bilateral (?) rash on front and back left side of abdomen/back. I also had the worst headache I think I've ever experienced and was seeing black spots in my vision by the time I got in to see the doctor.
They put me on Percocet for the headaches and Valtrex (shingles/chickenpox are a form of herpes, and this is the antiviral that is used). Every time I took that stuff I would experience extreme nausea and had to take strong anti-nausea med to counteract that (which would promptly put me to sleep).
It took me probably 2.5 weeks to get back to full speed, but I have a kidney transplant and so am immunosuppressed. I wish you a speedy recovery as I know it's no fun.
2013 Audi A4 - Premium+/Sport/MMI/B+O Audio
2007 BMW E90 335i (retired)