NO NO NO NO!
**WHY*** after everything you've been through this past week, just give your body a break. Its not a huge deal. Life is SUPPOSE to be unbearably boring at times, just get use to the one fact and it makes things a lot easier.
Boredom has always been my trigger, go work out or go watch a movie just do anything but sit around contemplating whether or not you should get high.
Its NOT worth it. Do you really wanna use? I guess you enjoy the lifestyle of being addicted to dope? If so, do w/e floats your boat but there are SO MANY people dying to be in your shoes right now... you are free... and there is nothing in this life as valuable or important as freedom.
Go live life, watch a sunset, go for a run, just do anything but heroin, really, its not an "easy way out", its an easy way to imprison yourself with an addiction. Fight it and be strong, you will love yourself for it tommorow.