No, you're not crazy.
As has been suggested - see a Dr. But, I wouldn't recommend a "general" practicianer - they'll just automatically put you on some anti-depressent & suggest you see a psych. See a "natural" dr. who may guide you through a few of the physical ailments (including the eating disorder). They will also be able to help w/natural treatments to get your hormones & body back into a normal balance, which at least is contributing to the mood swings and depression (if not the cause).
As you've said, you've been through alot. If these things have not been resolved in your heart & mind, then talking it out with someone may help. Others here have found just posting their stories as therapeutic. What works for one may not always be the right course of action for someone else - do what feels comfortable to you. I saw a psychiatrist for awhile, and it did help, but not any more so than many "self-help" books I utilized, and still refresh myself with when I feel old habits/feelings resurfacing.
(((SP))) - you're a tough cookie - you're mental strength has gotten you this far...you're gonna be alright