Whelan started her senior career turning out for
Rushden & Diamonds F.C.,
Barnet Ladies F.C. and
Milton Keynes Dons. She then signed for
Nottingham Forest, ahead of their 2011–12 Women's Premier League season and scored on her debut for the club. She stayed with Forest for the 2012–13 season. Whelan transferred to
Notts County during the summer of 2013 ahead of their maiden season in the
FA WSL. She left the club following its folding and joined Everton in May 2017. Everton went on to win the
FA WSL 2 Spring Series. During her first season at the club she was named February 2018 WSL 2 Player of the Month. The club joined
FA WSL 1, the top tier of women's football in England, ahead of the 2018–19 season. ==International career==