Gaining 7 pounds in one week? That's water, not fat. You'd need 24,500 extra calories for actual fat gain. Weight bounces, especially for women. Best thing: quit obsessing over daily numbers. I weighed myself constantly - now maybe weekly.
About 4 weeks in, scale hasn't moved. My eating was solid to begin with, and I'd already dropped 30 before I got started. Waiting to see if my body catches up soon.
Congrats! I'm at the halfway point myself, at least per my doctors. How's the loose skin been for you? My dermatologist says because of my age and how long I've been heavy and general condition, eventually I'd need surgical intervention.