Hi and thanks for the query,Misoprostol
unfortunately is not used or indicating in preventing pregnancies, generally, used in medical abortions and not to prevent pregnancies. It is but normal for the bleeding to cease after taking this drug. This drug has as main action, to cause contraction of the uterus
. When uterus contracts, this cause seizure
of any bleeding which of course is its normal effect.
It is possible that you fall pregnant, though the chances are reduced. You might to consult your doctor in case your cycle does not return, or seek family physician's advice now for appropriate monitoring and discussion of any other options.
Thanks and hope this helps,
Bain LE, MD.