Can you have shingles more than once and what are some of the signs?

Possibly. But it takes a very long time. You get shingles because your immunity to chicken pox has waned, and you get a reactivation of the virus in a nerve. This process generally takes decades to happen, but if you had the shingles in your 40s, and now you are in your 70s or 80s, it is possible. However, you are unlikely to get the shingles more than once in a short time.