How do you know if your kid is lactose intolerant?

My son is nearly 2 and still "spits up milk." He belches and then up comes some cottage cheese looking stuff and it smells like vomit or spit up. Is this normal? Could he be lactose intolerant? Its only with milk that he does that, nothing else.

About Brenda
Birth: November 01
On since: Aug 5, 2014
I am a single mom with a military background. I currently go to college full time and raising my son. I did work too, but chose not to pursue a job at this time so that I could go to school while I still can. Sometimes I wonder if I made the right decision
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