I have been on Yasmin for 4 months,but had to switch to Loestrin....

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 I wouldn't be concerned about this. Loestrin contains those three extra days of the hormones so you're body is probably trying to figure out what to do with it and by the time you start a new pack your body hasn't even had enough time to realize it should have a period...and as soon as you start that next pill you aren't going to have a period unless you have breakthrough bleeding. Even when I do have my "period" it lasts maybe a day. As much as I love it, I'm quitting this pill due to intense depression. Hope this helped! =)

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 because I feel like it's healthy to get a period or something similar, once in a while. Also, I see all these postings about depression, but I haven't experienced anything of the sort. Good luck!