Stomach pain, headache, and irritability whenever drinking ANY amount of alcohol?

So I’ve never really been a drinker. I’ve had a maximum of 3 drinks in a night total, and very infrequently, because I usually hit an “I feel like absolute shit” wall before i hit the “i am pleasantly drunk” phase. I usually have minor stomach pain and headaches and get tired and wish I was not around people anymore, even after just 1 drink, regardless of what that drink is.

Recently found out this is not normal and that most people don’t have unpleasant side effects until the next morning (unless they over-imbibe). Honestly just assumed people were just pushing through the pain to get drunk enough to not notice it 😭

I looked up the symptoms of alcohol intolerance and I don’t get any rashes or digestive issues or congestion or heart palpitations, so I don’t know if that’s what’s causing this. Anyone else ever experienced this or have any theories of why this happens?