High levels

So this maybe a weird question but here it goes...

I'm almost 7 weeks not being seen till the 29th of June. But I have noticed in this pregnancy hungriness, very very high levels of metabolism like I'll eat 3 plates or bowls of something and I'll feel the hungriness again like 30 minutes later I've never felt this extra hungry feeling before with my other pregnancies. And my husband goes I have a feeling you have twins. I mean I've already gained 15 pounds with in a month. About a month ago I was only 211 and now I'm 225 I'm not complaining about the weight but isn't this alot to gain with in the first month, going on 2nd month? I mean the hungry pain is so strong that it almost hurts my diaphragm.

Does this make sense to anyone in this group? Has anyone experienced this? I know each and every pregnancy is different. Please no rude comments. TIA!!!