Nope, they won't put you in for suicidal thoughts. They just ask that if the thoughts change to intent, that you immediately dial 911. Also, your pdoc and t will ask you if you are safe every time you talk to them.
It sounds like you are very depressed. You may want to touch base with a professional to help you through this.
Currently I am at the exact same place and these are the steps I have taken.
Bluemountains