My nursing daughter questioned my lactose intolerance, in so much as that she though it was IBS. I believe the two can be mistaken for each other.
However, I am pretty sure I have an intolerance as it seems to fit the proper pattern of symptoms, whereby it hits me usually a couple of days later. Once I've had a few trips to the loo, everything goes back to normal.
Whereas, my understanding of IBS, the symptoms can go on for quite a while with severe stomach cramps, constipation, diarrhoea which I don't suffer from. Just a bit windy & a few cramps before I have to make a dash for it.
Maybe someone can solve this one for me.