Hunger? Burning stomach? Or baby?

Katiana • Expecting first baby in August 2016! 💙💗
Is anyone experiencing a burning feeling in their stomach sometimes? If I eat something, then an hour or two later. I get this burning -ish, hunger feeling like I didn't just eat! I am 11wks and just want to know is it the baby, my appetite just increasing b/c of the pregnancy or not eating enough? Your thoughts...