I'd get nauseous everytime I drank milk. Once I challenged my friend to drink milk faster than her and I won and within 30 seconds I ran to the bathroom and threw up and missed the toilet.. I was like 7.
But I wouldn't give up. Milk made me feel sick everytime I drank it but I loved the taste and it was so refreshing. Overtime my body got immune to it and now milk is my superdrink!
You really shouldn't have kept on drinking it if it were making you throw up... your lactose intollerancy was pretty severe is it was causing that kind of a reaction
To be fair I would always get nauseous over the smallest things. Like to the point of gagging if I saw a spec floating in my drink or a non-clean spot on a fork. But yeah I would feel really sick drinking it but I guess I grew out of it.