Has anyone else suddenly developed an intolerance to certain things since being pregnant? I was fortunate enough to have no morning sickness, etc. in the first trimester, but now I'm coming up to 19 weeks I think I've developed a sudden, violent intolerance to milk. Not cheese or yoghurt or any other dairy, just milk. I had a latte on Tuesday morning followed by a bowl of cereal and milk, and I had to take the rest of the day and Wednesday off as I had crippling cramps, nausea and diarrhoea! 
This morning (not yet convinced that it is the milk) I had a small cappuccino which I thought would be OK because it's not as milky as a latte, and within about 30 mins of drinking it, I was on the loo again! Horrendous! Whereas yesterday morning- because I was still feeling a little...delicate- I had a black coffee and was fiiiiiine.
Can this happen? Is this another marvellous, magical pregnancy 'thing'...?
It's OK, I can live with it. As long as it doesn't take my cheese from me. ANYTHING BUT MY CHEESE.