Reality television has been a roller coaster for Jenelle Evans, now the Teen Mom 2 star is threatening to quit the show.

Jenelle Evans Pregnant Again

The reality star tweeted, "#TeenMom2 is about to be cancelled altogether cuz I'm about to quit #Dunzo"

She also called out her Teen Mom 2 cast mate, Kailyn Lowry, for talking negatively about her. The tweets have been deleted.

Jenelle Evans Arrested 

Evans, who is currently in her second trimester for child number two, recently came under fire for allegedly still smoking weed.

Text messages between Evans and a friend went viral and revealed her smoking habits.

One text from Evans on Feb. 10 read, "We can smoke and chill on a huge blunt lol"

The day before she wrote that she needed to smoke to relax.

"Let's drive and soke I don't want to be here...Just down the strip and back or something I need to get away."

The friend she was texting told Radar Online that Evans does indeed still smoke because it helps her cope with the pregnancy.

The source said, "[Evans] told me that if she doesn't have weed she will throw up due to her pregnancy. So she always has a lot of weed on her at a time."

The friend also revealed that when the marijuana is gone, Evans does whatever she has to restock.

"When Jenelle runs out of weed she will drive from her house in Myrtle Beach, South Carolina to Brunswick County in North Carolina, which is a 2-hour round trip to buy $120 worth of weed."

The father of her second child and Evans' boyfriend, Nathan Griffith, also is said to be a negative influence as the source said they have witnessed Griffith asking "Jenelle to take fireball shots."

He apparently told her the shots would not harm the baby but help Evans calm her nerves.