Increased appetite while breastfeeding!

Omg. I had my baby boy 3 weeks ago. I was so happy that I actually lost a ton of weight the first week I was home. However, breastfeeding has made me RAVENOUS! I am seriously always hungry. Now that my son is going through a growth spurt I am even HUNGRIER. is this normal? I don't remember being this hungry when I was pregnant! I don't want to gain a bunch of weight but I can't stop snacking!