I was getting my period like clock work the1rst of every month last month it changed to the 28 and now this month on the 29 still no period?

Have you had sex?: Are you presently sexually active, and have you had any unprotected intercourse? If so, you might be pregnant, and a home pregnancy test will help answer your question. Keep in mind that most women do not have a 30 day schedule or even a 31 day schedule, and all months except February are 30-31 days long. Women typically have cycles the same length as the moon phase. Most likely everything is fine