I don't think dairy I drink milk everyday but this was the first time it happened and it went on for about it 4 days
This could be a few things. All normal though.
It could be the dairy as sml43 stated and it can cause severe gas cramp pains.
You could be having ligament pains as well as cervical stretching.
If you are not well enough hydrated these pains will be much more severe.
Does this happen after you eat certain foods? I've found with this pregnancy sometimes dairy foods like ice cream, yogurt or a bowl of cereal will make me feel sick :/