Jenelle Evans, 21 year old star of MTV2's reality series Teen Mom 2, checked herself out of rehab after 4 days stay.

"Jenelle just needed to spend some time trying to figure things out," a source told RadarOnline.

"She wasn't in rehab that long because she doesn't think she really needs it. She's ready to live her life like a normal person."

The North Carolina native admitted herself on March 2 and left on March 6.

Evans tested positive for marijuana, opiates, heroin, and cocaine after being arrested several times, before checking in to the state's rehabilitation facility.

Evans tweeted (about 3 year old son), "This is for u jace, no one else. If anyone deserves this u do. Love u so much buddy."

The Monday after leaving rehab, Evans tweeted a photo of her and Jace with the caption, "just where I wanted to be."

Teen Mom 2 premiered on January 11, 2011. It is a spinoff of the network's second season of 16 and Pregnant, chronicling the lives of four young women in North Carolina, South Dakota, Pennsylvania, and West Virginia, and the struggles they experience everyday on their path to create a future for their children.

On a recent episode, Evans (before undergoing breast augmentation) admitted on camera, "I still haven't seen Jace because I've been so busy working and hanging out with Kieffer."

Kieffer Delp is Jenelle's on again off again boyfriend of 5 months.

The fourth season ofTeen Mom 2, currently in progress, is reportedly the final one of the series.