Ptsd or

I got told i had ptsd years ago but i thought it was from finding my nana dead when i was 11, anyway i seem to have panic attacks when i go out public drinking or eating so like weddings, holidays, nights out, works do’s anything like that and i start vomiting and can’t stop for a day if it’s a wedding or the whole time if it’s a holiday, to the point i can’t move from the hotel the whole time or if close i go home, i can spend a week on holiday just being sick not even being able to leave the room. It’s like my stomach does involentry muscle spasams that won’t stop until i know I’m home away from the situation. It’s ruining my life and just wondered if anyway else suffers with similar