What just happened?

I decided to take a break from alcohol after finding I was drinking too often. Ended up taking a one month break. Tongiht I had a glass of wine with dinner and one after dinner. Fast forward 10 min and I was sweating, clammy, tingling lips, extreme stomach pain. Ended up getting sick and now I feel ok. Hindsight I should’ve eased into it with one glass but prior to my one month alcohol hiatus I could drink several glasses no issue. What do you think caused this immediate horrible reaction? I wanted to have a drink tomorrow with thanksgiving dinner but now I’m nervous!