The 36-year-old "The Mindy Project" star admits in her new book "Why Not Me?" that she is dogged by fears in the middle of the night, reported People Magazine.
In a section called '4AM Worries', Kaling writes, "In my thirties, I gained a sense of calm that came from professional stability and, although this is not backed by science, a general slowing of my metabolism, which is why I can gain seven pounds from eating one heavy dinner.
"As calm as I might be, still, about once a month, I wake up at 4 AM and lie in the dark worrying about the same handful of things...I will never have a husband and all my female acquaintances will.... What if my kids are really young when I die because I waited too long to have them?"
She will be next seen in the Christmas comedy "The Night Before", which also stars Seth Rogen and Evan Goldberg.