Hey hun - wow it sounds like things are pretty scary at the moment. From what you are saying it sounds like you are afraid that your mood will drop low enough that you might use a gun or other method to end your life, I also gather that right now you don't feel like this? Correct me if I am wrong.
Did you tell this to your doctor today? Have you shared it with any of your family or a friend? I would maybe suggest that you make yourself what I would call a first aid kit, but it is for your mental health. You go to it when you are feeling really low and/or scared of harming yourself. It could consist of things like
*A list of phone numbers of people you could call or text, even if you don't talk about how you feel
*A plan/list of what you could do - call a help line, come on here, contact your GP, present to the emergency department
* Write a letter to yourself of how you do not want to end your life, maybe use a favorite poem or quotes
* some foods you like, music, film, a blanket - list them or have at hand
* write out the things you like to do - go for a walk, play video games, read
I know you are waiting on seeing someone, maybe the above could help until you get to see them. It can be quiet on here but talk to us. I have been in a scary situation somewhat like this. If you do feel that you are losing control or become to scared you can present to your emergency department. I think you are being very brave talking about it and seeking help, well done for that