I know that lactose intolerance can be inherited. I suffered from C all my life then at 25 got pregnant and immediately got D. My doctor said I was lactose intolerant and it would go away after having the baby. I didn't make the connection right away but now looking back during that pregnancy, many foods triggered D, so I know now it was IBS. My first child (now 5) had severe gas (not colic) but we kept her on milk formula (lack of knowledge on my part, no real help from family doc). She was always very regular with the odd day of D. Since starting school she's had C and she's been seen in hospital emergency for stomach pain where they did X-ray and said she was constipated and it is not an uncommon thing when kids start school and routines change although the intern first said she mostly likely had IBS since I have it. I'm having her tested on Feb. 21 for milk allergy. Now with my second child, girl, now 5 months, I'm having all the same problems I had with my first but now have more knowledge. At two-three weeks of age we put her on ALIMENTUM formula for allergies to milk and soy formulas. My doctor never tested her for allergy just said switch her. Because Alimentum is so outrageously expensive, over the past two weeks I started mixing the Alimentum with a milk formula and now it's just a milk formula, well, for two days she's been crying on and off, not sleeping, much more gas, and stool change. It's quite obvious that she's having difficulty with the milk formula. I want to have her tested as well. My doctor is the type of person who hates to put babies on any medication and tells me "there's nothing we can do" or there "is no medication for babies." Anyone have any suggestions/comments?