You better ring and ask, they should have explained it to you properly at the time. I'm sure it won't be anything too invasive.

Get some Psyllium Husks from the Health Food Shop (it's Metamucil without the flavouring and 1/5 of the price), it looks like breadcrumbs. Mix a teaspoonful in a small glass of OJ and down the hatch.

The best thing about this stuff is it binds you if you have the runs, and clears blockages if you have hard poos/constipation. Sprinkle some on dds cereal in the mornings, it's very gentle.

Get rid of the dairy - I find it is the WORST!