I was good at hockey as a teenager. The weekend I was selected for National trials , my period came . Not only was I unprepared for it but there all weekend trying to find some san pro , I had the usual terrible pains too. My hockey game and concentration suffered all day Saturday and I didn’t really recover until Sunday lunchtime. Worse , I was too embarrassed to say anything to the Coaches so they probably thought I was just not a good player .
I had a good final session Sunday afternoon but that was it and I was never contacted again after.