When Will The Breakthrough Vaginal Bleeding Cease Caused Due To Delayed Contraceptive Pills?

Hi, I usually take my birth control pill on Sunday.....after my period starts. I missed Sunday and Monday due to me being out of town and I forgot to pack them. When I arrived home on Tuesday, I took Sun/Mon pills Tuesday night and Tues/Wed pills Wednesday night. Then I was on schedule for Thursday, Friday, and so on. I started breakthrough bleeding the following week.....it will be a week tomorrow. When will it stop? I m having slight cramping too