I always have pms symptoms and this month ive had none. i started bleeding the day i was supposed to start but it's not heavy like usual it's light.

Great!: If you are not sexually active and a pregnancy is not of concern to you, then this is just a normal variation of menstrual periods. If you are concerned about pregnancy, run a pregnancy test.

See below: Absence of PMS can be a sign of pregnancy. If you have had intercourse in the past 4 weeks check a pregnancy test on first voided urine in the am. If (-) recheck again in 7 days. Other than pregnancy, there are various hormonal reasons for abnormal menstrual cycles.Stress, emotional upset, rapid weight loss are but a few of them. SEE http://cle.clinic/1IDXMvq