Crazy water retention at 5 weeks

Since I found out I’m pregnant I’ve put on 5 lbs and feel like an over inflated balloon. I’m so confused and upset. I watch my food intake like a hawk and am eating less than before since nothing sounds good anymore. I drink plenty of water every day and I just keep gaining! I lift weights 4-5 days a week and do about an hour of incline walking everyday. I worked so hard to lose weight and was so proud of myself and in a matter of weeks i feel fatter than before. It isn’t helping that my 4 year old keeps making fat jokes. I’m a teary mess right now. Does the bloat go down? Is this normal?