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