"Teen Mom 2" star Leah Messer isn't having a very good couple weeks.

The reality television star was accused of cheating by her husband Jeremy Calvert last week and now it's being exposed that Leah Messer may have had a more serious drug problem than "Teen Mom 2" viewers knew about.

A source claiming to be the 22-year-old's drug dealer reportedly told In Touch magazine that she's been "getting high for years" on dangerous narcotics including Vicodin, Lortab, Percocet and Oxycodone, according to Radar Online.

"She's picked up 30 to 40 pills at a time from me," alleged the insider.

The source reportedly added that Leah Messer spends up to $600 a week from the "Teen Mom 2" paycheck on drugs. Her family is reportedly aware of the young mom's alleged drug problems as well.

"I've seen Leah pop a handful of pills, chew them like they were candy and swallow them," an unnamed relative stated.

The family member added, "it's actually the pain from withdrawal that bothers her, not her back. She can't do a day without opiates."

Aside from her alleged drub problems, Leah was also accused of cheating on her husband of two years with the same man she cheated on her ex-husband Corey Simms with, according to the media outlet Celebeat.

"Well that was a surprise kinda u did it to Corey and now me with the same person good job sl*t," Calvert wrote on his Twitter account.

He continued, "Yea I don't give a f**k done protecting ur a** good luck."

Although the pipeline engineer has since deleted the tweets, he might be thinking about leaving the marriage.

"He doesn't have an exact timeline, but he's done," a source stated.