It sometimes takes 2-3 months for the irregular bleeding to resolve. The nausea should resolve after 1 week. Make sure your drinking plenty of water with the pill or even try taking it with food. You might want to try taking it before bed so you sleep through the nausea. Also, if you are under 150 pounds the femcon might be too strong for you and you might want to ask you doctor to give you a lower dose pill.
This also happened to me the second month. It is normal and will eventually go away.. I haven't had a period since and its two months later!
femcon sick to my stomach othen perfect time irregular bleeding nausea sleep