http://www.medications.com/effect/view/31081 I have been on Yasmin for 4 months,but had to switch to Loestrin. While on Yasmin my periods were very regular and timely directly down to the day. This month i took loestrin each day on time, and used back up methods. There was only one "slip up" and even Fri, 06 Jun 2008 09:42:51 -0400 http://www.medications.com/effect/view/31081?item=8972 I didn't have my period for three months after switching from Yasmin to Loestrin and even seven months later I've only had a couple periods; every three months is how it's going. While on Yasmin I knew when my period would start almost down to the hour so http://www.medications.com/effect/view/31081?item=8972 Wed, 11 Jun 2008 23:45:43 -0400 http://www.medications.com/effect/view/31081?item=9137 I don't think it's that you switched birth control, I think it's the Lo 24, I have been on it for a long time now and never get a period. I have actually only had break through bleeding twice in almost a year. And I actually get excited about it, just beca http://www.medications.com/effect/view/31081?item=9137