Mumbai: Bollywood actress Aishwarya Rai Bachchan on Tuesday said that becoming a mother has been a blessing for her. "Change is constant in life. Every experience contributes to change and growth, making you hopefully a better human being. Becoming a mother has been a blessing and I cherish this gift from god," Aishwarya said. "Aaradhya (her daughter) is a wonderful blessing in our lives and she is very special and it is a loving fulfilment. I am grateful for this experience," she said.

Aishwarya urged everyone not to speculate about her second child after Aaradhya. She said that when such a moment comes she will make it known. The actress was at an event to announce her association with a stem cell banking brand. Asked if she will opt for stem cell banking a second time, Aishwarya said: "I know what are you trying to ask. Whenever such a moment comes, you all will get to know. But please don't speculate till then.

The actress was speaking at the unveiling of stem cell banking by LifeCell here. Aishwarya said she had opted for banking her daughter's stem cells. "I was aware about stem cell banking as a development probably out of my interest in the medical field as most of my friends are doctors. I have been aware of this way before I got married. I was always fascinated by it. Any research and development in general let alone in science and healthcare has always been of interest to me," she said. "The beauty of this association fulfils the wish of social encouragement. It is addressing a mindset that is fairly new to our country at large. I am happy to contribute, educate and make people aware about this scientific development," she added.