Painless, heavy & recurrent bleeding of sudden onset during pregnancy is seen in:
Painless ,recurrent and heavy bleeding is seen in both placenta pre and cervical carcinoma but since placenta pre is more common than cervical carcinoma , the best answer would be Placenta pre.
Cervical carcinoma
Circumvallate placenta
Placenta pre
Abruptio placentae
Antepaum Haemorrhage