Hi, I have been using injectible birth control for 2 years, and I just stop last dec.26, 2012.. I want to take diane35 pills, but my menstration is irregular when I take injectible birth control.. last Friday night February 08, 2013 my underwear had a spot of blood, but I don't know if this is menstration already, can I take diane35 now? I am 100% sure that I am not pregnant..