Jenelle Evans says she can't trust anyone in her life, not even her own family, and she's reeling in the wake of her husband being charged with child abuse.

The 'Teen Mom' star just broke her silence on the child abuse charge against David Eason in a case involving her 14-year-old son Jace ... going after police and the folks closest to her.

Jenelle says ... "I do not trust anyone around me ... I have no idea what human being I can trust anymore, not even my own blood."

She continues ... "I'm being fed all these different stories from different people. People trying to get on my good side.. To then betray me over and over."

Jenelle does not name names in her social media posts ... and she also takes aim at the North Carolina cops who oversaw the child abuse case saying ...

"YOU WOULD THINK POLICE WOULDN'T MAKE A ONE SIDED POLICE INVESTIGATION. THEY DIDN'T CONDUCT INTERVIEWS, DIDN'T ASK ANY INFORMATION FROM THE PARENTS."

"THIS SEEMS LIKE A VERY BIAS SITUATION LIKE EVERYTIME BEFORE. I TRUSTED THAT DETECTIVE WITH ALL MY HEART.. FORGOT YOU CAN'T TRUST COPS... SILLY ME."

TMZ broke the story ... David was charged with a misdemeanor after Jace ran away from David and Jenelle's home back in September, prompting an investigation. It was the third time Jace had run away from home in about a month's time.

Remember ... Jenelle got custody of Jace from her mother, Barbara, earlier this year and he's David's stepson.