The 25-year-old opened up about her the lowest point in her life during a new interview, revealing she nearly died from her drug habit.
"I think my low point was with my whole drug issue and the whole heroin thing," Evans told E! News. "I almost overdosed and died. I was trying to run away from my problems and then I almost overdosed."
Evans said it wasn't until she began having drug withdrawals that she decided she wanted to stay clean.
"When I started withdrawing for the first time in my life, I was like, 'This is not the way I want to live. This is scaring the shit out of me, and I need to get help right now,'" she said.
In her upcoming memoir, "Read Between the Lines: From the Diary of a Teenage Mom," Evans also said she was "hooked" to opioids almost immediately after trying them for the first time and as shooting up as often as "four or five times a day."
"God knows what might have happened," she said. "I might have been dead."
Evans' tumultuous relationship with her mother Barbara -- who as of now has primary custody of Jenelle's oldest son Jace -- has also been heavily documented on the series. When asked about her mom, she said the likelihood of them ever mending their relationship with was slim.
"I think our relationship's lost," Evans admitted. "I don't think it's ever really coming back at any time."
Evans explained that her parents divorced when she was very young, which prompted Barbara to take on the role of both mom and dad.
"I think that built a lot of my anger up," she said. "[My mom] was very hostile and yelling and screaming all the time."
Although the two reached a court-ordered visitation agreement back in May, which granted Jenelle some visitation rights on a custody schedule, there is little hope for reconciliation.
"She knows if she gives [Jace] to me that I will cut her off. That will be it. And she's scared," added Evans.