It seems that I have lost a follower and can't continue to do the quests. I do not know how to find my follower and have tried waiting for days and returning back to my house.
Fix this??

You may want to place this in the Skyrim bugs forum, rather than here.

And you would have to provide a lot more information if you want any help MOXY.

Who? Serana?

Because I learned she is very glitched out.