How many jumping jacks?

I'm a touch disappointed in my weight loss last week.  Here's what I did:

8/6:  1 hour bootcamp, 1 hour elliptical, ate 894 calories
8/7:  1 hour spinning, ate 1006 calories
8/8:  1 hour bootcamp, 1 hour elliptical, ate 829 calories
8/9:  1 hour elliptical, ate 875 calories
8/10:  1 hour bootcamp, 1 hour elliptical, ate 360 calories (I wasn't feeling well at all due to start of TOM, and I spent most of the day in bed worrying about vomiting)
8/11:  1 hour elliptical, ate 1693 calories
8/12:  1 hour elliptical, ate 1157 calories

So I ate 6814 calories and worked out for 10 hours.  According to my math, that should have resulted in a weight loss of about 3 pounds.  Instead, I got 1.5. 

This is frustrating.  On the one hand, I'm happy for a loss.  But on the other hand, I busted my ass this week and my weight loss slowed down.  Should I be eating more (I'm not sure how I can eat more, since I feel like I'm eating all of the time as it is)?  Should I try calorie cycling?  Do any of you calorie cycle?

Or should I chalk it up as a slow week and move on (I did lose 5.5 pounds last week, but with much less effort)?

Also, one of the women in my bootcamp is driving me crazy.  She always has a million questions, and she never listens.  Every morning, we do the same warm up.  Every.  Morning.  And yet this morning, after the instructor said, "10 jumping jacks," like she ALWAYS does, crazyface asked, "How many jumping jacks?"  What I wanted to say was, "10.  It's always 10.  Every damn day, it's 10.  But in your case, 42." 

I am not at my nicest when exercising at 5am.