Bad weight loss plan...

So... obviously I am always trying to loose weight. I gave up grains and dairy a couple of month ago in order to improve my diet. This week life threw me a curve ball and I started the worst diet plan ever...It has consisted of a week of vomiting and the like. I feel like I was kicked in the stomach by a horse. My energy level is so low I can barely leave the bed and I haven't eaten more than a piece of toast in days. I know I have lost weight but it is a really rough way to loose it. I also know that it is likely I will gain it all back once I start eating again...