Jenelle was reportedly in search of answers regarding her health late last year. She was hospitalized in December and disclosed she had "biopsies done everywhere."
A source told Us that Jenelle was under the weather while filming the Teen Mom 2 reunion special for Season 9 earlier this month.
"She has a cyst in her ovaries," the insider explained. "She went to the doctor before this and told production. She wasn't feeling good."
The reality TV star reportedly "stormed off" the set when the reunion was taping, only to return a few minutes later.
Jenelle spoke of her outburst and hinted to a potential health crisis on April 7 on Instagram.
"After this stressful reunion, I've been put through the ringer. To trust an entire group of people for years then they turn their back on you and treat you like a puppet is beyond words," Jenelle captioned a photo of David, Ensley and herself.
"Family is everything I need to make it through my hard times and I am truly #blessed for what I have today. Didn't take many pictures but super happy my mom was there by my side to defend everything. Please don't ever let anyone bring you down and be strong in whatever you do. #TeenMom2 #ReunionSpecial."