### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
For over a year now i have been experiencing the need to be sick all the time and actually vomiting. I have had blood tests done and have been told that everything is normal. However it is still going on.  In the last 2 months i have3 also dropped from 7 1/2 ston down to 6 1/s stone, when i have not changed eating habbits. but yet the doctor tells me i am ok

### output:

Hi dear, Thanks for choosing Chat Doctor. Unfortunately, in your question you haven't presented any detail about your condition, you only mentioned feeling sick and vomiting, it's hard for any professional healthcare provider to give you a good diagnosis or suggestion for your case. Thus, I suggest that you rewrite your question again and include more details so that we can help you better. You should tell us about your age? If you take any medication? Is your vomiting intermittent? How many times do you have vomiting per week or month? Do you have any abdominal pain? what's the consistency of your vomit? Do you have any history of any other diseases? Do you have diarrhea? You can also add more information that you think is important for us to know.However, if I base my answer to your question and that all your blood test showed normal (I'm assuming by these blood tests the doctors has ruled out underlying cause of your vomiting), then I suspect you might be having intolerance to certain types of food, such as Gluten intolerance also known as celiac disease, milk protein or lactose intolerance. My advice is that you visit a doctor and request to do the following tests1. IgA TTG test 2. Lactose tolerance test3. Milk allergy test. Along with these tests make sure you tell the Doctors your full detailed history, so they can reach to an appropriate diagnosis. If you have more questions don't hesitate to ask. Hope this helped.