Going back to bed symptoms and conditions

Surprisingly i have been ok on this pill. i was on yasmin, then switched to yaz (which was the worst pill ever! i had my period for over 3 weeks on that pill). I've just started on Femcon, and it immediately stopped my breakthrough bleeding. the only side affect i think im experiencing is the headaches! i've been really stressed lately so i dont know if it has to do with that or the pill. also i have been REALLY tired a lot. i seem to wake up, do something then want to crawl back to bed for a few hours. anyone else get tired on this pill? other than that, the pill is actually working. now if we could just fix these headaches...