`Preston taking good care during pregnancy`

London: John Travolta can relax about his actress-wife Kelly Preston`s pregnancy as her mother insists she is taking extremely good care of herself.

Even though Preston has conceived at the age of 47, her mother Carlson says she is in perfect health, reports femalefirst.co.uk.

"She`s not worried about it at all. She`s not concerned. She takes really good care of herself and she`s in good health. She looks so much younger," said Carlson.

The couple is very happy as the news came just over a year after the death of their 16-year-old son Jett, who died in January 2009 after suffering a seizure.

Preston and Travolta are also parents to 10-year-old daughter Ella.