What Are The Side Effects Of Using Cerazette Mini Pill?

Hi, My son is 14 months old and I want to try again for #2. I have been on Cerazatte mini pill since he was 6 weeks old (over 12months) first 6 months i had lots of bleeding and the last 6 months i had nothing. I stopped taking the pill on the 1st may 2011. Still no period my cycle was alway 33days regluar I have been using clear blue monitior test and i still have ov. I have read/ heard lots of horror stories about Cerazette and now really worried. With first prg was on normal pill for 9 years stopped 13 th dec 08 period on 18th march 09 fell prg in apirl had mc period then fell prg again in june had my son.