Mild Heartburn

Mild heartburn, stomach ache, diarrhea- lactose intolerance?

I am a 19 year old female, I eat healthy and am moderately active. I woke up this morning with heartburn, stomach ache, and diarrhea. I cannot figure out what is wrong, I have heard everything from lactose intolerance, to pregnancy, to crohns disease. I haven’t eaten anything acidic or spicy that could cause heartburn. The only thing I can think of is lactose intolerance. For the past couple of years, I’ve only been drinking soymilk, just because I prefer the taste over cows milk. To my knowledge I never had an issue with milk when I was a child, however my mother developed lactose intolerance as she got older but she said she never got heartburn with it. A few days ago I bought regular milk and have been drinking that. Could this be the culprit because my body isn’t used to cow’s milk? Thanks

Any chance you could be pregnant? If not, then yes maybe your body has a sensitivity to cow’s milk.

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