Few days ago i was doing perfectly fine but suddenly i felt really hopeless. i felt suicidal. i tried killing myself few days ago. i've lost 5kg.

Get help: You need to be seen immediately by a mental health professional for help with your depression and suicide attempt. You are in crisis. Depression can appear abruptly if you experienced a severe trauma or loss. What happened a few days ago? Likely you've been feeling down for a while with your weight loss. See your pcp if that's easiest to start. Go to ER if any thought of self-harm. Hope this helps

ER: Sounds like you're going through a really tough time. If you're feeling like you might want to hurt yourself - your best option is to head to the nearest ER to seek some help from a qualified psychiatrist.