I have just recently been diagnosed with Irritable Bowel Syndrome...

I have just recently been diagnosed with Irritable Bowel Syndrome. My doctor thinks I may have a sensitivity to milk, so I have been trying to avoid it, drink Lactaid Milk and I also bought some Lactaid Ultra pills... Well the first box I took (over a period of a few weeks), turned out fine. I'd eat ice cream, cheese and be okay. Most recently, last week I had wanted ice cream, so I took one and within a couple hours I had the worse feeling of car sickness, and then vomited. It was complete with chills and being hot at the same time. I also had had chili for dinner so thought it was that...wrong, today I took a lactaid pill and ate nothing that would normally trigger my IBS and about 2 hours after taking it I felt like I was car sick and vomited.