Barbara Palvin is getting real with her fans about a health struggle she's kept private -- revealing she recently underwent surgery for endometriosis after years of painful, debilitating periods.

Kroy Biermann reached out to the woman who subpoenaed Kim Zolciak in her divorce case to warn her about Kim ... this according to the woman's deposition in that case.

"The Blind Side" star Quinton Aaron's family is revealing what led to his hospitalization ... they tell us he suffered a spinal stroke.