Food issues out of control

i am 20 years old and i have what i am starting to think is some sort of eating disorder. i physically cannot eat any vegetables except potatoes, carrots and parsnips and even then they have to be roasted, almost burnt. i have tried repeatedly to try to eat things but as soon as i start to chew i heavily gag and heave. if you were to hide a single pea in my meal my mouth would find it and make me need to throw up. the list of things i cannot eat is so massive so it is easier to just list the things i do - bread, pasta, potatoes, prawns, marmite, grapes, bananas, apples. if i eat yogurts, soups or sauces they must be completely smooth, no bits or lumps. i think i am stuck with a babys palette. i am also vegetarian and lactose intolerant which cuts down a lot of foods and i think i have a slight wheat intolerance too. i am now 4 stone overweight, termed obese by medical standards, and can see very little hope of loosing weight as everytime i try to diet i end up putting on even more. a lot of diet foods either contain meat or milk, and vegetarian subsitutes tend to be just as bad for you as the real thing. my nails and hair are becoming brittle because i am calcium deficiant. i would love to be able to eat a leafy salad or beans and lentils but even the thought of it eating them repulses me. it is very embarassing for me socially, going to a friends house to eat or going out for a meal has led to complete hysterical breakdowns, imagine if someone goes to a lot of effort to make you a meal and you almost throw up on the table. not nice. ive talked to friends and parents but they just dont understand. my mum thinks it stems back from childhood, at age like 4 to 7, when i didnt like my school meal my head teacher would sit me in her office until i had finished it or force fed me a lot of it and make me miss play time. apparantly i used to hide peas and sweetcorn and bits in my cheeks from lunch and wait until it was home time and spit them out in the bin in the playground at the end of the day. even managed to keep stuff stored in there during singing practise! i am considering hyponotism but am skeptical as to if it really works. if anyone has any sort of suggestions i would love to hear them, but please dont say 'just eat veggies' cos if it was that easy i would have got over this by now.

You need to see a psychotherapist

Most of our peculiarities stem from our childhood experiences. Sounds to me you are really phobic about the foods that you cannot eat.
There are so many and varied causes .
You need professional help, the sooner you get it the better.
Trouble will be getting you Dr to refer you. Its hard to get these things on the NHS.

I had major phobias as a young person and a mature adult, much of it steamed from childhood events via my heavy handed father. I was four years in therapy. At the age of 54 I would say I am well and have been for four years. I only got therapy late in life, too late to make anything much of my life. So don't delay!!

My husband is a food phobic too, he cannot eat eggs, fish, unprocessed meats or beans and pulses. I know he is just moments away from gagging if made to try them. My nephew is the same -vomiting if made to eat veggies.
My husband is profoundly deaf and was mercilessly bullied at school, my nephew is sensitive and was overweight at school and was bullied, I was bullied for being academic and bookish.

You need to understand the psychological causes for your problem, there will definitely be one I can assure you.

Good luck