Even when you do not feel so well, it is better to express how you feel without any particular attachment or intention. So you may say, “Oh, I am sorry, I do not feel well.” That is enough. You should not say, “You made me so!” That is too much. You may say, “Oh, I am sorry. I am so angry with you.” There is no need to say that you are not angry when you are angry. You should just say, “I am angry.” That is enough.