Am I Eating Too Little and Freaking My Body Out???

I agree with some of the other people on here. I don't think you're eating too less at all! I eat 1400, and am lightly-moderately active and I'm still losing. Just hang in there, and you'll keep losing. The last few pounds are always the hardest.

take your daily BMR * 7 days (10,899 + total weekly workout calories), then subtract your weekly calories from food intake....divide that by 3500 (amount of deficit needed to lose 1 pound of fat) that will give you how much weight you should be losing each week. Remember as you lose weight your BMR will decrease. Also, remember these are fairly accurate, but not exact amounts. I have used my routine now by watching my BMR weekly and adjusting my cardio and food intake. I do NOT believe in the "starvation mode". For one, your body is intelligent enough to know that it has reserves to burn (as long as there is fat on the body). Starvation mode is for those who are already in shape and have minimal body fat.

My BMR is 1903 (13,321 + workout calories burned (8400)) = 21,721 calories burned for the week. Food intake is roughly 1200 calories daily (I eat 3 meals and healthy snacks throughout the day) = 7,700. 21,721 - 8,400 = 13,321/3500 = 3.8lbs lost weekly. So far since I have gone to this method I have stayed near that estimate. I DO NOT eat back my calories burned. Why would you want to eat back what you have worked so hard to lose? Your body can receive what it needs through other sources than food intake (i.e. consuming fat on the body).

Wow! Okay, I didn't realize the methods didn't coexist - I thought everyone knew something I didn't! I'm shocked I lost a chunk of weight without knowing all of this! I don't log the walking whatsoever since it just started a month ago for my summer job, as I figured it'd be a nice surprise supplement to what I've already been doing! haha (: Okay, this is very helpful, thank you SO much for your time!

When you have a lot to lose, you have a huge (pun intended) margin for error.
Meaning you can do a bunch of things wrong and still see weight lost. What is the weight from though?

Sadly, some is going to be muscle mass, and that will bite you later.

Now some manage to not only take a huge deficit, but also exercise a huge amount, and even with a lot to lose screech to halt in loss.

But usually it's when you get down in weight that doing enough wrong backfires.

And then 5 months at weight loss plateau trying many things always in the wrong direction (eat less exercise more or some combo), makes the initial weight loss not all that fast when you add all the time together.

If reasonable deficit had been taken from the start and adjusted as weight was lost, likely no issues at all, and probably faster loss and much better body shape as many discover.