A month a go I changed contraceptive pill front the combined pill to cerazette, after two weeks of taking the cerazette I've had the worse stomach pains ever, bleeding from the vagina and banging head aches, I feel sick all the time, lost my apatite and I constantly get an acid taste that's come up from my stomach into my mouth. I've been takin the cerazette for over a month now and nothing's changed. Can you tell me what to you or what is wrong please/ thanks