Joseph and Kendra Duggar‘s March arrests took quite the toll on Kendra … who told her husband over the phone she could barely eat or even walk from the stress of the situation.

Kendra confessed her struggles to Joseph while he remained behind bars in Arkansas in calls on March 21 — the day after her arrest — and March 26 … and TMZ obtained the audio. You can hear in the call … Kendra says she is so distressed about their legal woes, she could barely walk because she’s so weak.

In another chat, she tells her hubby she’s having trouble eating anything, calling it a “miracle” when she was able to get down a whole sandwich. She says she even went for an IV to sustain her, and Joseph assures her he’s been praying for her health.

We told you about Kendra’s struggles before — she broke down in tears to Joseph in another call as she explained she doesn’t know how to be supportive to both him and their kids, who were not in her custody during at least some of their communication.

The “19 Kids and Counting” stars also discussed their finances during multiple other calls, even debating selling one of their investment homes to keep Kendra afloat during Joseph’s absence.

As you know, Joseph was arrested on March 18 and charged with lewd and lascivious behavior involving molestation of a victim less than 12 years old and lewd and lascivious behavior conducted by a person 18 years or older.

On March 20, both Kendra and Joseph were charged with 4 counts each of second-degree endangering the welfare of a minor and second-degree false imprisonment. Kendra was booked into jail and released the same day after she paid a $1,470 bond, while Joseph remained in custody.

He was then extradited to Florida for his child molestation charges, but released Tuesday after he posted a $600K bond. The judge ordered him to stay away from his victim and not have unsupervised contact with any minor.