Dairy allergy??

A couple weeks ago I started to experience really harsh stomach pains all throughout my abdomen. It happened day after day, but finally I realized it was happening after I ate/drank anything with dairy. The more dairy I ate, the harsher the pain. I thought it might be stomach ulcers, but after a few days of cutting out dairy & not having any issues, I feel like I'm developing some kind of dairy allergy. Anyone gone through anything like this?? It's soooo painful 😩