Weight gain from bloating?

So by Friday of last week I had lost 3lbs in a week from morning sickness. I'm still sick, but finding things that work for me in terms of eating. But definitely am not overeating. This morning I was up 3lbs just from the weekend. I don't want to gain too fast, could this just be from bloating? I basically gained back the weight I lost. Gaining weight is the worst part of pregnancy LOL!