Can shingles affect the gastro intestinal tract?

Can shingles affect the gastro intestinal tract? Since a bout of shingles in Dec. 2017, I have experienced lack of hunger, queasy stomach and sometimes stomach pain when ingesting food. When food has been taken, bowels become erratic and sometimes with spontaneous movements. Movements sometimes occur two or three times a day tho little food is eaten. Sometimes bowels appear to contain micous. Movements occur with little or no normal indicators such as stomach growling or gas passing. Occurences sometimes by just standin from a sitting position with no prior need to excrete felt before standing.

Age: 58
Male
Medications: tylenol

I developed shingles can I still be contagious to others?

I developed Shingles on 8 days ago. I am on Famciclovir 500mg, 3x day. The swelling around the rash has gone down, and, for the most part the actual rash is drying up. The area in question is on my left thigh. I wear long pants all day long to cover the area. I am scheduled to take a First Aid Course on Monday August 21 & 23. Is it safe for me to do so. Can I still be contagious to others.
Thank You

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