How long after taking the COC pill will I be able to have sex without getting pregnant?

Possible is one thing, but the risk of rupture is higher than for one previous CSection. Uterine rupture is generally rare, but unpredictable and catastrophic. The likelihood of successful VBAC would increase if you were in labour and dilated to a significant degree in the earlier pregnancy.

The primary mechanism by how the morning-after pill works is to delay or prevent ovulation, hence taking the pill after ovulation will mean the pill is much less effective. However, I will generally still advise my patient to take the pill to prevent any unwanted pregnancy if there was unprotected sex because of the following reasons: We can estimate when ovulation happens, which is about 14 days after your period for a usual menstrual cycle of 28 days, but we are unable to say for certainty when it actually occurs.