Ravenously Hungry!!

OMG I'm only 6 weeks & have been ravenously hungry for the last 2 weeks. I can eat a huge meal and within an hour my stomach is growling again. I'm a pretty small person. Only 109 lbs... 2nd pregnany (8 years later), and was never hungry like this before. I can't ever rest during the day, because my stomach growls... smh... Wonder how long this will last...