If you're alright and are still reading this thread, Val, it's not worth it to throw your life away over any one person, or one relationship, time can heal those wounds, but not if you cause permanent damage to your body by going overboard on harmful drugs
Life is filled with hardships, you can't let one of what could even be several break ups hurt you like this, or you definitely won't live to see the days where you get back up on your feet, and work towards the next relationship
You have people that very much care about you and are willing to help you through this, you just have to listen and push yourself until you're back in good spirits