Hi Dr, My Name Is Amy. I Don't Know Whether

Hi Dr, my name is Amy.
I don't know whether I need to see a dr in person, but I guess I will know by then end of this.
I have had anorexia for 6 yrs, I have gained and lost weight in that time but never had a BMI above 17 in that time. My lowest BMI was 9.3. (I know, horrible)
Over the past 9 months, I have tried to lose weight again. My intake in these 9 months have consisted of
breakfast: a handful of frozen berries
lunch: a garden salad with avocado (sometimes with roasted vegies)
dinner: as above or a 2 bowls of vegie broth.
I have a lot of herbal tea throughout the day and will occasionally chew food and spit it out. (so it doesn't get swallowed). In these nine months my intake hasn't exceeded 600 calories.
I waitress over the weekend and try to walk or do yoga everyday!
In this nine months I have gained a lot of weight. I havent lost any!!! I don't know why! To me it makes no sense, I was eating much more when I was at my lowest BMI (2yrs ago), but havent managed to lose any whilst dramatically restricting my intake. I dont eat any protein, or complex carbs. I've even cut out all orange vegies, but am still gaining weight.
The weight isn't normal though, it's exceptionally flabby and has a lot of cellulite. Please don't think this is body dismorphia, because others have commented on the difference in my 'weight distribution'. My stomach is flat, but all over my buttocks, hips and thighs is flabby and has no muscle tone at ALL. This has never happened before and I have never looked like this. My legs, hips, breasts, and buttocks are just full of large, saggy, flabby, fatty tissue.
I assume with my lack of nutrition I'm also lacking essential minerals.
I don't know what to do, I feel like I should stop eating all together, but when I was extremely lean and thin I was eating 6 times a day and a balanced diet, including all food groups.
How has this happened, and what on earth has happened to my body?
I really look forward to hearing from you.
Regards, Amy