Welcome to YT and the wonderful world of being owned by a Yorkie!
Although I understand your concerns from reading some of the posts about the health issues of Yorkies, please try to just enjoy your puppy and give it lots of love. It's true that Yorkies can have certain health problems, but that doesn't mean that every Yorkie experiences those problems. I have had 3 Yorkies in the past 30 years. My first one lived to be 16 years old, my second one lived to be almost 14. Both of them were very healthy their entire life. I now have a new baby that is 6 months old and is at this point, just fine.
If you do research on other breeds, you would probably find that there are certain health issues with them also.
I'm sure there are a lot of people on this site that also have had healthy babies. You just have to love them lots, and enjoy them.
You will really like this site. There are a lot of very caring people here!
So please try to relax a little and enjoy!