To express that you are feeling very sad or upset, you can say "I'm feeling very down" or "I'm feeling really upset." Other ways to express this sentiment include "I'm feeling heartbroken," "I'm feeling really low," or "I'm feeling really blue." It's also common to say "I'm feeling really sad" or "I'm feeling really depressed." These phrases all convey a sense of emotional pain or discomfort. If you want to express this sentiment more indirectly, you can also say "I'm not feeling very good" or "I'm not feeling myself," which suggests that you are not feeling your usual self and may be struggling emotionally.
