Insensitive comments

Maria
So I'm 24 weeks and I feel like I look fat instead of pregnant and so I asked my grandma and she said "yeah you just look fat" and I showed her the line on my belly and she said it was a stretch mark then pointed out all the actual stretch marks. I'm so offended but at the same time I'm like she's an old lady maybe she doesn't get it? Idk what to think and now I just feel fat. I wanted to wear a bikini this summer but i don't want others to think the same as my grandma does.