I will be 14 weeks pregnant on 14 Friday and I have lost almost 4 lbs. I barley have an appetite. I feel sick a lot. I am not showing at all yet, which i know you usually don't start showing until 19 wks. I will get waves of nausea and headaches. I lost 20lbs before I got pregnant, so I just wonder if my weight will all come at one time or I will not just gain that much.