Jamie and Rachael Bonser are campaigning for hospitals to check for a condition at every pregnant woman's 20-week scan.
The condition is called Vasa Praevia and is caused by the placental or umbilical blood vessels crossing the birth canal.
It is not mandatory for hospitals to check for the condition.
A full list of the symptoms and what to do about them is available here.
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West Midlands Police said the public will see a gradual change in the way officers are 'deployed' over the coming week.
As we go into the last two weeks of the campaign, here's how we'll be bringing you up to date in the Midlands.
No-one was injured in the blast and police do not believe it was linked to terrorism.