Nicole, I think that this is the absolute most difficult time of life for a person with type 1 diabetes. At your age, hormones are going crazy, and for us females, this can be the reason for high levels that just don't seem to respond to insulin. So it isn't YOU and what you are doing, probably. It may just be insulin resistance caused by hormones. Maybe you can find some comfort in that.And wildly swinging hormones can also make you feel very depressed. That may be what is going on with you.
If you can't get a pump, see if you can get your doctor to prescribe smaller needles. I weigh about the same as you, and actually, 116 is still pretty small for a girl of your age -- you have never weighed this much because you have never had an adult-sized frame before. You are probably at just about your adult height right now, and 116 sounds pretty normal if you are an average height. Check this link to see what normal weights are supposed to be for various heights: http://www.flat-stomach-exercises.com/ideal-body-weight.html
I suspect that you don't have much body fat at 116 pounds, and the standard sized needles may be a bit too large for you. Because of my small size (118 pounds at 5'3" tall), my doc prescribes needles that are this size:
Capacity -- 1/2 ml cc Length: 8 mm (5/16") Gauge: 31G (Note: the higher the number of the gauge, the smaller the needle size)
So maybe that will help with the shots. I truly almost don't even feel these and they don't bruise me. The standard sized needles do hurt more and I find that they cause bruises. The small ones can be ordered by any pharmacy. I also notice that the worst place for bruising (ouch) is on the top of the thighs. If you prefer to use thighs for injections, try going on the SIDES of the thighs. Less big blood vessels, less pain, and no bruises.
The food cravings may be because your body is not using insulin well -- hence the high glucose levels. This causes you to crave certain foods. Believe me, I have been there. I remember having awful food cravings. Once you can normalize the levels for a while, these will go away, trust me.
The best advice I can give to you from years of doing this is to increase how often you test and adjust to what the numbers tell you. Don't think of the numbers as good or bad, for we then get into a guilt thing, and I truly think that this is the root of a lot of depression in folks who have type 1. Numbers are merely neutral info that tell us whether we need more insulin or more food. Not good, not bad, but info to direct you. The non-diabetic person's brain and pancreas do exactly the same thing -- adjusting when levels go too far up and down. We just have to test and do it ourselves. I found a great improvement when I started testing every 3 hours and adjusting -- that way, if I miscalculated my insulin or food at a meal, I could catch it and fix it with a couple more units of insulin or some juice if I was a bit low. Doing this prevents the swings from going real high or low and brings your levels in the normal range more often. And then the food cravings just go away.
Your dog will continue to give comfort. Animals are great that way. And the people on this forum care, too, for we all walk in the same shoes. We do understand. I hope we can help you. We certainly care.