I am in the middle of my third week of pills when I missed 2 days in a row from being out of town and forgetting to bring them. I had sex the first night gone and without my pills, he ejaculated out of me. After returning home and doing the "two pills a day" procedure to catch up and be back on schedule I am having horrible cramps and bleeding heavily. My usual periods are light with cramps only the first day. I've been bleeding for 2 days, and officially start my period in 9 days according to schedule. I was wondering if this is normal and if plan B is needed to prevent pregnancy?