What to do.?

Erica • 23 years old | Married to the love of my life ❤️
So my boyfriends mom called my step mom like a week ago and asked her if I was pregnant. Then my boyfriend told me she asked him a few days prior to that. She said it because I " look bigger " but for 1 I work at Taco Bell so I eat there a lot. And for 2 I've only gained 5 pounds since we've been dating and me and him have been dating a year and 7 months. It really hurt me when she said that because it makes me feel like I'm fat. ( which I know I'm not but it still really hurt to hear her say that ) 
This is us when we were like 5 months into our relationship. 
And this is us now.