To be honest, I think it's quite tough. Of course, I have these experiences from before.
It's never really easy to deal with one more tough thing. I think always the beginning of this kind of period, it's tough.
Periods have been described as one of sport's final taboos, and the issue was raised by British tennis player Heather Watson when she lost in the Australian Open in January, when she attributed her performance to "girl things".
As a follow-up question yesterday, Kvitova was also asked whether having to wear all-white at Wimbledon made it even more difficult for female tennis players.