I'm new to IP as well, been on it for 3 1/2 weeks, down about 12.5 lbs. I have had the opposite problem as a lot of people, I get soooo full off of the packs and veggies I feel like I'm going to burst sometimes! Guess maybe it's because of the large amount of protein? My life consisted of eating so many carbs I'm sure that's part of it. I also had the bad headaches the first few days, though I think it was due to caffeine withdrawals (used to drink up to 2 energy drinks a night, work night shift in a busy trauma unit... and coffee just doesn't cut it!)... so I took an Excedrin Migraine and my headaches were instantly gone. Weird stuff.
Glad to find this forum, it's kinda cool and encouraging to see everyone's progress

Keep up the hard work!