I am 13wks and 5 days pregnant, but am rather alarmed at my waist expansion. Some of my trousers that I had given up wearing due to being too loose are now uncomfortably tight. I don't think I have put on much weight anywhere else apart from my boobs and I don't have an obvious pregnant bump - I could just be fat!. I am normally a size 8-10 and have been consistent with this for many years. I am not massively overeating. I am exercising but at a lower intensity and a bit less frequently and less long than before pregnant. Just wondering if anyone else has experience such an extent of weight gain so early in pregnancy.