I wouldn't think it'd be the *way* you used your pill as much as just the pill itself messing with your cycle. Don't they say it can take a year or more for your body to sort itself out after coming off the pill (in terms of trying to fall pregnant)? Do you have any alternative contraception you can use instead of the pill until you know what's going on? (Cause you know, abstinence is probably the most disappointing form of contraception ever )