Very, very, very bad idea. Dont do this, dont even think about doing this. It can go so wrong on so many levels. I get desperation, I have been there. I get that you will consider anything to end your pain, been there. But trust me, there are better ways.
There are lots of resources attached to this site, maybe its time you read some of them for yourself so that you can at least have some idea of other options rather than what you outline here.