Endometriosis sufferer here. Since my symptoms have worsened (around 2years) I always get my period either in a holiday or at the weekend. My cycle varies between 28-35days. I'm a teacher so having it at work would be a nightmare, even with all my medications.
It's almost like my brain can control it? This month I'm 5days "late". I suspected it was because I was due in the week. Lo and behold period arrives today.
Is there a science behind this? Is it really just a massive coincidence?'