Gwen Stefani is reportedly pregnant with her third child
The No Doubt singer - who already has sons Kingston, three, and 19-month-old Zuma with husband Gavin Rossdale - is said to be expecting again but is experiencing bad morning sickness.
A source told America`s OK! magazine: "Gwen is having a really rough time this pregnancy. She had all-day morning sickness for a while with Zuma, but she`s sicker this time round and has been feeling exhausted and dizzy."
The 40-year-old blonde is keen to keep the pregnancy a secret for as long as possible so has been covering up her ever-expanding stomach.
At an event in New York last week, an onlooker said: "Gwen was pulling at her shirt to keep it away from her body. It seemed really strange - but then, when she turned to the side, I could see why. She definitely had a baby bump!"
Gwen recently revealed she is "running out of time" to have another child but is wary of expanding her brood.
She said: "No one could have prepared me for how awesome motherhood is, and how hard. I often feel like I`m running out of time. But I don`t want to spread myself so thin that I can`t be good for them. Poor Zuma, he`d be the middle guy.
"I`m not focusing on it right now, but it`s not up to me anyway, you know? These things are miracles, so we`ll see."