I know everything is probably fine and that I am over reacting but I am 15 weeks pregnant and not showing at all. I had terrible morning sickness in my first trimester and haven't gained any weight. I'm really anxious generally at the moment, partly because I still feel so run down and exhausted, and yesterday I had to take a day off work because I was feeling so tearful and crap. Now I am obsessing about the possibility of missed miscarriage and concerned because I don't look at all pregnant. I know I need to calm down but this is my first pregnancy and I am constantly worried about things going wrong. When do people usually start showing? I am 5,5 and 8 and a half stone - dont know if this makes any difference.