I am 5 months pregnant and can still fit into all of my regular clothing. I started out not chubby but not thin. I've only gained minimal weight. I'm worried that something could be wrong even though my doctors say everything is fine. Am I being paranoid? Other than me telling people I'm expecting they would never know. I've also had zero morning sickness and minimal heartburn. I've been severely constipated and peeing nonstop. Any words of wisdom?