Can a low fat diet make you intolerant to fatty foods?

I started Slimming World a couple of weeks ago and haven’t had any fatty foods since, well up until yesterday. Yesterday I went out for lunch and had a beefburger with salad and last night and still this morning, I feel a bit ill. Just feeling sick really. I don’t know of any viruses that are going round at the moment and now I’m wondering if it’s because I haven’t had any fats in my diet for 2 weeks and now it’s made me slightly intolerent.

http://ping.fm/M4WP1