I am a 19 year old girl, I have always been sensitive with foods, as a young child I couldn't have dairy and I was vegetarian for 8 years. I get mostly mild but sometimes severe nausea after/during eating, when being constricted such as wearing anything around my neck or having a bra on. I get very hot around the neck and it causes a lot of discomfort. I burp a lot which sometimes relieves the symptoms momentarily but recently I get terrified to burp in case it causes vomiting because I feel so uncomfortable. I've always blown it over but it has started really bothering me to the point I can't get on with day to day things to my full ability.
what could this be? and what can I do?
Well, without a detailed clinical evaluation it would be difficult to determine the cause of your symptoms. Possibilities that may need to be considered include ENT infections/ inflammations, GI infection/ inflammation, micronutrient deficiencies, GI motility issues, stress/ anxiety, hormonal/ endocrine imbalances, metabolic issues etc. It would be best to have this evaluated by a primary care physician initially and depending on the cause diagnosed/ suspected, it can be managed accordingly or specialist care may be sought.
Hope this helps.