I feel fatter than I really am in a dress😭

I really feel like Im as big as I used to be when I was pregnant with my son, even tho I’m about 40 pounds lighter than when I was pregnant. I do not own any date night dresses because of my body shape (too much hips and tummy fat). And so I went to Walmart and seen this really comfortable/cute maternity dress (even though I’m not pregnant “yet”) I decided to buy it for our just random date nights or at least a night dress. 🤷🏼‍♀️ so I put it on for the first time and my boyfriend of 5 years hasn’t complimented me at all. He just says “why are you wearing that”😐 like do I really look that bad ? 🤦🏼‍♀️