ill feeling and runny nose

For the last 14 months or so I have not been able to eat without paying the price, so to speak.  I do not overeat nor eat pre-processed foods.  Mostly because I love to cook and it fits my budget better to make it myself (I believe it tastes better too :-).  Whenever I eat my nose begins to run, and without fail, I will feel ill to my stomach for about a half hour or so.  These symptoms are invariable, regardless of type or quantity of food consumed, and also regardless of the time consumed.  Yet, during all this, which has understandably somewhat put me off my feed, I am gaining weight.  I personally find the combination of all these issues somewhat obscene.  LoL  My family doctor and I have explored possible medication interactions and many other aspects of lifestyle.  Frankly, we are both at a loss, and of the eight specialists I have seen (at no small cost to my family and myself) all efforts have proved fruitless so far.  I would be very thankfull indeed to any insite anyone may be able to offer.  My direct contact e-mail is ***@****     Thank you all very much for your time and consideration. Bless you one and all.  :-)