Alcohol and throwing up feeling

Hi, My friend has his bachelor party in 4 weeks and im obviously going there. Almost my whole life i have had throwing up feeling when drinking alcohol. Im not talking about hungover but during the drinking. I only drink like 3-5 drinks on the whole night and i might even throw up. Im also never drunk and i get these symptoms. I had 6 month break from alcohol and the next time i tried alcohol i got the same symptoms. I believe its acid reflux. Does anyone have any tips how to not have these symptoms and be able to enjoy alcohol? I would really like to be drunk at the bachelor party.