Crazy emotions. Drastic, sudden change.

Alex
Why have I gone from independent, happy, single, I don't want to be a wife or mother mentality to ...crying all night, confused, wanting to find a man, open up to a man again, be a wife, and have a baby?? 
I am so emotional right now.  I know I have a lot of crazy things happening in my life right now that I don't want to talk about.  But I didn't think unknown feelings would all come out like this in the span of one night. What happened?