Greenbird, I'm not sure if was a coincidence. Here's my observations.... My period was several days late. This morning I decided to try Oil Swishing. As I was oil swishing I noticed that I started to get cramps. I didn't think to much about it. Then about 30 minutes later I started my period. I was amazed by this and also thought it may be a coincidence. I decided to come to this website to see if others had a similar experience and it appears they have noticed a link with Oil Swishing and menstrual cycle. Take care.