Self conscious anyone?

Thanks to my sister I have this issue. I am not one to worry about the way I may look to someone else. But she has not stopped telling me how big I look every time she sees me. Almost everyday.  Like yesterday she said I looked as big as this lady we know who is about 32 weeks pregnant. I am 16 weeks and I feel huge. I don't take pictures of my bump really becaus I don't like how big I look :(. I have gained about 5 pounds so far. And now I am scared to gain more weight :(. Agh why do people's opinions get to me!!!!