Can Microgynon Cause Irregular Periods?

Hello, I stopped taking microgynon 30 last month in order to try to get pregnant. Two weeks after i stopped, i felt the sharp ovulation pains and had all the other signs i normally associate with ovulation. I figured my first period would be due about 2 weeks after ovulation, but all i have had so far is very light spotting (pink). Is this just my body re-adjusting or suspected pregnancy? Any help appreciated :)