14 days ago i had unprotected sex. i had a one day period and i'm spotting on and off. what does this mean?

Weird cycle: It is important to not panic just because one cycle if a little off from the others. The main issue is what is the pattern over time. If your cycles return to normal over the next few months then one abnormal cycle is not an issue. Always make sure your pregnancy test is negative. If you are not on birth control consider starting which will also give you better cycle control.

Could check hpt: Reasons for irregularity include weight gain or loss, breastfeeding, alcohol use, eating disorders, marked emotional stress, endometriosis, uterine fibroids, cervical polyps, polycystic ovarian syndrome, excessive exercise & pregnancy. When a girl has just started menstruating & around the time of menopause periods can be irregular.