Chateal pill problems

Is anyone on the Chateal pill? I've been on it for around 6 months now and I've had the most irregular periods... 1 month I didn't have a period at all, 2 or 3 months I had 2 really short periods and I've never had this problem on any other birth control. Also, I think the worst part is that I have ABSOLUTELY NO sex drive which is putting a bit of a damper on my relationship... Any feedback would be greatly appreciated!