01
I don't feel very well.
我感觉身体不舒服。
A: Hi, I don't feel very well. I may have caught a cold.
您好，我感觉不舒服，可能是感冒了。
B: How long have you been feeling like this?
这种情况有几天了？
A: 3 days already.
已经3天了。


02
I don't feel like eating anything.
我什么也不想吃。
A: How do you feel?
你感觉怎么样？
B: I don't feel like eating anything. I feel like vomiting.
我什么也不想吃，想吐。
A: How long has this been going on?
你这样有多久了？
B: For one day.
一天。

其他表达法:
I'm under the weather.
我觉得不舒服，生病了。
Both of my feet and hands ache all over.
我双脚双手都很酸痛。