Eventhough I didnt experience the natural waterbag burst for my first, however, sanitary pad isn't enough as waterbag leakage can happened as "gush of water" that suddenly burst. I mean even if you were to wear it, you will still wet it and it doesn't hold the water leakage. Alternative, ill suggest to put a rubber mat on your bed where you sleep as it is easier to clean. Once you wash up then, you can use the pad.
you can get disposable underpads from pharmacies!