Gwen Stefani has confessed that having a busy career and personal life is stressful.

The 43-year-old singer admits she puts a lot of pressure on herself because she is always trying to juggle her responsibilities as a mother to sons, Kingston, six, and Zuma, four, with her work with her clothing line L.A.M.B. and her commitments with No Doubt.

In an interview on UK TV show 'This Morning' with her fellow No Doubt band members, the 'Settle Down' singer said: ''Well, you don't plan for it to all happen at one time. Like, 10 years ago, I said, 'Oh I want to start a clothing line so I can do something creative, for when I have my kids and I can be home and I won't really be doing music.' And then here we are! We're doing like everything at once and I'm like, 'Oh no!' It's super hard. Every day is a challenge and I don't know, like, it doesn't work most days but some days you get up and it's all good.''

In 2008, the month after completing a total of 106 live solo shows, Gwen immediately fell pregnant with her second child, Zuma, having already had her first son Kingston while on tour.

The pop star - who is married to Bush rocker Gavin Rossdale - admits her pregnancy ruined plans to reunite with No Doubt that year but she is pleased the group is finally back together now and have released their new album 'Push and Shove'.

Gwen said: ''I had gotten pregnant [with Kingston], went on tour pregnant, and then had the baby and went on tour. It was crazy.

''I nursed the first baby for like 14 months on tour while doing shows, and then the month I got home I got pregnant with Zuma and that was the month No Doubt were gonna get together to start to write the record, I was just a bit dictated...''