Shingles is a form of Herpes - Herpes Zoster to be precise.
If your Dr did not give you meds and tell you how to treat this, then you need to get a new Dr. If your Dr did address those issues, and you didn't pay attention, then you need to start doing so. You are in charge of your health, and you have to watch out for yourself, cuz no one else will, at least not as well as you should.
Herpes zoster (or simply zoster), commonly known as shingles, is a viral disease characterized by a painful skin rash with blisters in a limited area on one side of the body, often in a stripe. The initial infection with varicella zoster virus (VZV) causes the acute (short-lived) illness chickenpox, and generally occurs in children and young people. Once an episode of chickenpox has resolved, the virus is not eliminated from the body but can go on to cause shingles—an illness with very different symptoms—often many years after the initial infection.
As far as being contagious - PAY ATTENTION - until the rash has developed crusts, a person is extremely contagious.
The symptoms of herpes zoster cannot be transmitted to another person. However, during the blister phase, direct contact with the rash can spread VZV to a person who has no immunity to the virus. This newly-infected individual may then develop chickenpox, but will not immediately develop shingles. Until the rash has developed crusts, a person is extremely contagious. A person is also not infectious before blisters appear, or during postherpetic neuralgia (pain after the rash is gone). The person is no longer contagious after the virus has disappeared.
The rash and pain usually subside within three to five weeks, but about one in five patients develops a painful condition called postherpetic neuralgia, which is often difficult to manage.
Shingles
http://en.wikipedia.org/wiki/Shingles
There is no cure for shingles, but treatment may shorten the length of illness and prevent complications. Treatment options include:
* Antiviral medicines, sometimes in combination with corticosteroids, to reduce the pain and duration of shingles.
* Pain medicines, antidepressants, and topical creams to relieve long-term pain
As soon as you are diagnosed with shingles, your doctor probably will start treatment with antiviral medicines. If you begin medicines within the first 2 days of seeing the shingles rash, you have a lower chance of having later problems, such as postherpetic neuralgia. Early treatment of shingles is important, because the problems that can arise can be serious and resistant to treatment. For example, 40% to 50% of people with postherpetic neuralgia do not respond to treatment.6
The most common treatments for shingles include:
* Antiviral medicines, such as acyclovir, famciclovir, or valacyclovir, to reduce the pain and the duration of shingles.
* Over-the-counter pain medicines, such as acetaminophen, aspirin, or ibuprofen, to help reduce pain during an attack of shingles.
* Corticosteroids, in combination with antiviral medicine, to reduce pain and the duration of shingles.
* Topical antibiotics, applied directly to the skin, to stop infection of the blisters.
In some cases, shingles causes long-term complications. Treatment depends upon the specific complication.
http://www.webmd.com/skin-problems-and-treatments/shingles/shingles-treatment-overview
Hope this helps - Good Luck!