I am four months pregnant and I keep reading that I should have gained 6 to 8 pounds by this time. Since I got pregnant I have lost 8 pounds and have not gained any of it back. The doctor says not to worry because I am eating healthier, but I am also eating less. Has anyone else had this happen? Should I be worried? This is my first pregnancy and I seem to worry about everything. Could I be over reacting?? Any advice will help.