Celia Hatton

Now heavily pregnant with her fourth child, she has already had earlier scans and is hoping this is her final one.

The first time I was told about the device, I was a bit scared, and I thought maybe it will harm my baby.

But when I saw it for myself, I realized it's actually useful.

She is greeted by midwife Lydia Nyaboke, who is wearing a white uniform and has a big welcoming smile.

She invites the man-to-be to lie down on a bed and then picks up the ultrasound device and powers it on.

If you look at the screen there, and back to the head, the baby is very active, moving.

As Lydia moves the probe in a circular motion, she tells me she is checking the baby's position, the placenta, and fluid levels.

And then we hear...

Those are the heart chambers that I'm beating like that.

The heartbeat is okay.

The scan is over in a matter of minutes and I ask Miriam how she feels as she gets up to leave.

I didn't feel awkward.

I felt comfortable.

Midwife Lydia says the scans have been popular with local pregnant women.

They feel so nice when they get a scan for free.

The community that surrounds us, they come from a very low background.

Most probably they cannot even afford to go to do a comprehensive scan.

It has really made me take the decisions that I make, especially to our mothers.

And it has been really a success to us.

As children, a lot of our listeners might have taken part in that age-old practice of knocking on a random door or ringing a neighbour's doorbell and then running away.