28-09-2012, 03:13
Some people start their PM on the first day (day period starts). But some people say it made them a little sick to their stomachs so they wait til period ends to start PM. It depends too on what type of BC you're on. It really gets confusing here and I'm not on BC so I don't know but I believe Lady Flash did a little experimenting with PM on BC. You might look up her posts and see what she said.