Drunk almost immediately from any drink?

I don’t drink very much, mostly because the taste of a lot of alcoholic beverages do not appeal to me. I probably have two drinks a month, and will be almost instantaneously drunk.

I cannot drive after having one cider at my local brewery, a glass of port, a pisco sour, or anything really. My favorite drink is absinthe which is laughable given my above description.

I understand that my tolerance should be lower due to the fact that I don’t drink more frequently, but my BAC would likely be legally drive-able after one drink in the US which is concerning. I am also much more sensitive to my medical cannabis than others, and used to think these were unrelated coincidences.

Mid 20s F of average weight