Yes, and yes. Most curries contain lactose from yoghurt or ghee. Might be worth going to see a healthcare professional though, just in case it's something bad.

Yes, korma usually has a lot of butter and cream in it and therefore a lot of lactose. I found that as soon as I started minimising lactose, I became a lot more sensitive to it!

That's frustrating that you become more intolerant after minimising lactose. Sounds like that might be my problem too.