I had chicken pox when I was about 6 weeks old, then somehow rubbed one of the last ones that was on my face and re-infected myself. So then 21 years later, my niece gets them, and sure enough...I get them for the third (and thankfully LAST) time. Didn't realize what it was at first, had to go to the doctor to find out. The last time left a few scars but they're in places that can't be seen easily! Both my kids got chicken pox at the same time, so I had a two-fer.
I also had rubella when I was about 6 months old (didn't need the shot when they came out with one in the 4th grade - I remember the teachers lining up all the kids in the hallways so we could all get the injection - but had to take it anyway). As a precaution. When I had my daughter get her last set of MMR shots before she started school, they told me that I had to have a booster since it had been so long ago. Damn, that thing hurt!!! And I couldn't complain with my daughter right there watching me.
But I will NEVER forgive my son when he got his last shots before starting school. We were in the waiting room, he knew it was shots, but no problems. He was calm, playing, being his usual happy self. Then the nurse opened the door, called his name, and he screamed! He locked his knees together and I had to push him from behind, with him screaming the whole way into the examination room, causing all the other little kids to get scared and start crying. He screamed the whole time the nurse was setting up for the shot. He screamed up to the moment that needle went in. Then stopped and said "That didn't really hurt at all". I wanted to drop kick him out the door!
Wow, I didn't know you could get chicken pox more than once. I got them when I was five like most of the kids in my class. My cousin got them as a teenager and bless her heart she was so vain back then, so when she got those pox she thought she was going to die! My two year old daughter screams if the doctor even just looks at her, so you can imagine the trauma when she gets a shot. One thing though she gets over it fairly quickly and forgets about it.