Weight loss.during pregnancy

Ashley
Hi everyone. I found out I was pregnant at 4 weeks witch I weighed 168. Now I am almost 8 weeks and weigh 163. I haven't had morning sickness and been eating sweets like crazy to be honest. I know that is bad but im craving sweets. I had a gastric sleeve about a year ago and I stop losing weight before I got pregnant. Plus I have constipation. Any ideas? Is this just me losing or dose a normal pregnancy lose weight to? Im asking because I dont know if it from the sleeve or the babies.