It's basically all a big complicated circle meshed together with some unfortunate events.
A few days ago, my mom was having trouble with an irritating rash on her arm. It was bad enough that it was making her sick and depleting the strength in that arm. She went to a doctor and was diagnosed with shingles. She is very young in comparison to those who usually get shingles, but it was likely triggered by massive amounts of stress and the fact that she had chicken pox not once, but twice, as a child (apparently didn't become immune after the first time).
My mom quickly began going over the vaccine records for all of the kids (including me). Either my record was not updated or I apparently never got the immunization for it. I had an appointment to get a booster yesterday, but Walgreens cancelled the appointment as I was walking out the door and rescheduled it for this morning. I showed up at Walgreens this morning for it, and they told me that I never made an appointment (wth?) and sent me out.
Never made another appointment and probably won't. I'll just have to be careful. I likely won't pick it up from my mom, but there is a good chance that I could get it from my baby sister (who is always around and touching my mom) if she makes herself contagious. That is, if I didn't get the vaccine when I was younger.
The next step is to call my childhood doctors and see if they have records of me being vaccinated for chicken pox. If so, I probably have nothing to worry about. If not, I better stay away from my mom and baby sister.