Headline-making 'Teen Mom' star Amber Portwood made a dramatic gesture last week by getting an enormous portrait of her 2-year-old daughter Leah tattooed on her torso. But with all that ink barely dry, friends tell me she's already regretting it!

"Amber wanted to prove that she never wanted to lose custody of her daughter again, but had no idea how painful and sore she would be," an insider tells me. "Now she is having to sleep on her back or right-hand side and can't take it anymore."

Amber's life has been a roller coaster since appearing on the ginormous MTV show. The 20-year-old mother has been charged with domestic violence for allegedly assaulting her baby's father, Gary Shirley, and even lost custody of her baby for a while after The Department of Child Protective Services placed Leah with her father until Amber purchased her a proper bed.