Liz Sullivan, from Ebbw Vale, was awarded the MBE for her services to the charity she co-founded - In the Pink.
"When the letter came, it was a terrific surprise because it just seemed ridiculous to have an honour for something you enjoy doing" she said.
"I think that it'll raise the profile of our charity. The work that the researchers and the doctors are doing is phenomenal. This will help people understand that".
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The work of one of Wales’ centres of excellence for cancer treatment is the subject of a new series starting next Friday on ITV Wales.
Inspectors said the restaurant owner ignored warnings and failed to improve hygiene standards - he has now been fined in court.
£1 million from the Welsh Government will be used to help with period poverty in communities and schools across Wales.