I'm seriously so overly emotional. with the whole labor and then it dropping and also having my…

I'm seriously so overly emotional. with the whole labor and then it dropping and also having my bloody show. no sleep. and being terrified of delivering again. I cried this morning on my way home because my sister gave me something that looked like soda. but was really a barely sweetened carbonated water. and it was so nasty and I was looking forward to having soda since I couldn't in the hospital. and so I cried. I couldn't stop it either. I've cried like 6 times today. and not just little crying. its like waterfalls of tears.. what's wrong with me.?