I'll be 13 weeks in a couple days, and I feel like I'm bigger than I should be. This is my 4th…

I'll be 13 weeks in a couple days, and I feel like I'm bigger than I should be. This is my 4th pregnancy (first was a miscarriage), my kids are 10 and 8... But, from my understanding, women show earlier in their pregnancy the more children they've had, and the smaller they were prior to becoming pregnant (I was 120 pounds)... This just seems a bit ridiculous to me lol... And, I've only gained 3 pounds (after losing 5)...