last week @22wks,started bleeding with cramps.had had my scan done and found normal.but had to go check the neck of the womb a day later.docter used a speculum to check.started bleeding a few hrs later.went 2 hospital and confirmed bulging membranes.nothing they cud do to save baby though born with a heartbeat.(neck of womb checked cos of previosly going into labour at 24wks,but baby is well).what could have caused the miscarriage.speculum? :-(