PLEASE don't use ipecac. You can die from taking that, every time you take it you're risking your life. Ipecac got me put in treatment last year, its really serious and really dangerous. Please don't do it, its so not worth it.
I think its awesome of you to notice these symptoms early and reach out for help. It sounds like you're starting up some bad habits; I would definitely talk to a therapist or counselor about this, and maybe even mention it to your doctor. Trust me, you don't want to go down this path, and the longer you stay on it the tougher it gets to beat. Before you start doing any ED behavior, you may want to look up the side effects. Eating disorders do nothing to make you healthy or beautiful and often don't even end up making a person "thin". Overall, try and be careful, this disease can be so dangerous.