A member asked:

Irregular menst. periods since sept.2017 after taking antibiotics. very light, short, inconsistent periods - very different to periods before. no change in contraceptive meds (trigestrel), and i don't take other meds. i'm 27. what can cause this?

A doctor has provided 1 answer
Dr. Jeff Livingston answered

Specializes in Obstetrics and Gynecology

Breakthrough bleed: Sounds like breakthrough bleeding which occurs when you have bleeding at unscheduled times while on the pill. Often things get back to normal the next cycle. If not then schedule a visit to discuss changing brands or changing birth control methods. This is very common. Other than being annoying it is not dangerous.

Answered 4/7/2018

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