First, when you're on the pill, you do not ovulate. The "period" you get every month comes from withdrawing the hormones when you take the placebo pills. This is why you had brown spotting after missing several days of pills. It is like taking the placebo pills. However, and I could be wrong, but I thought most forms of the pill require you to use backup protection the whole first week after skipping 2 or more active pills. That being said, you probably did not ovulate (odds are against it, though stranger things have happened). Your body most likely would have viewed the days you missed the pill as cycle day 1 (12/

, and most women ovulate around day 14 of their cycles. Still, if you can't remember to take the pill on time regularly, you should look into the patch or nuvaring or something. Also, just off the pill, many women do not go perfectly back to their regular cycles, delaying ovulation even further (some do but many don't--it took me over 5 weeks to have a period again after I stopped the pill).