How do you go on when you just lost the love of your life?

"I just Recently lost my wife of 2 years due to a drunk driver.She's 23 yrs.old & was 6 months pregnant carrying my child to be.We Were high school sweethearts & I consider her my soulmate. We practically planned everything; from diapers to cribs to college fund.The driver was prosecuted,sentenced 15 years for vehicular Manslaughter. I haven't got any decent sleep since she & i son died after the accident, I really miss her a lot.Iv'e been crying all this time and seeked professional medical help on how do i put the shattered pieces of life altogether. Lately i'm thinking of ways to end my life to get this pain out. How do you go on when something like this happens to you? You see all of your pics w/ her as a family, the trips you took, the videos, the ultrasound from the hospital, the memories & fun times.Please help...I'm really am at the very end of my rope.I tried pretty much everything including psychotherapy to no avail. Right now I'm thinking of doing something reallystupidHELP"