I am on cerazette, for three months now. Lately I have been experiencing cramps, nausea, very sore breast and I am a bit bloated even though I have been using the toilet regularly. I came on my period on the 30/06/2011, which was light but lasted a week and after that, I forgot my pill twice and I had what I believe it was withdrawal bleeding for another 5 days. Is it normal to feel like I am pregnant whlst on the pill?