I feel the same! I have to make sure I eat enough now and put extra things in to make up my calories! (all healthy ofcourse). But it's totally WIERD dince I've spent my life battling to stay IN my calorie range! I can't say it's not a welcome change but it sure is odd!!
I suppose it could be the fact that before, blood sugar levels were constantly spinking and dropping, now I have got all the bad stuff out my system its probably stabilising and I'm starting to feel how a normal-weight person feels about food...odd...(or maybe not since I've never really been a "normal" person around food!)
Also, as above, it could be stress since I have exams but I really don't feel like it is really. The day I decided to lost the weight something clicked in my head big-time. Anyway, only the future will tell.