Good day, i have been on tetralysal for a month and after taking my first three pills, i came on a brown period for 2 weeks now my april period is delayed i have taken a home pregnancy and came back negative what do you suggest ?

Vaginal bleeding: Any new, abnormal, or unexplained vaginal discharge or bleeding should be professionally evaluated. This probably is just a coincidence, i.e. unrelated to your lymecycline (Tetralysal) treatment. And 2 weeks is definitely too long for a normal mesntrual period. See your doctor if either the abnormal color or irregular periods continue; or sooner if symptoms worsen.