Eating a bunch at 36 weeks?

I just wanna make sure this is normal! I've been getting hungry way more often now. I'll eat and then an hour or hour and a half later, I'm hungry again! I've gained about 30 lbs throughout my pregnancy and the doctor told me he's not concerned but I really don't wanna go over the 35 I'm supposed to. Is it normal to get hungry so often this late in the pregnancy?