Mackenzie is done playing nice and wants to put Dr. Drew on blast for his comments about Ryan.

Catelynn Lowell appears on Teen Mom OG's reunion special and opens up about her stints in rehab.

Maci learns the truth about a new baby about to be born into her extended family, but who schools her on it.

Amber sits down to relax after a stressful day that consisted of cutting all of the BS out of her life.

Maci meets with Catelynn after a stint in rehab, but what stories did they have to tell each other about it?

Maci learned some more details about a shocking TV opportunity.

Tyler struggled to keep his life moving on without Catelynn around.

Maci struggled with her health, but who helped her out?

Maci and Taylor are along for the ride with someone close to them.

Farrah is departing Teen Mom OG, but will she be able to get back in good graces with the girls?

Catelynn, Amber, Maci and Farrah pose for a photo.

Catelynn Lowell sports a brand new hairstyle on Teen Mom OG.