DH has just phoned. MIL has had DS all morning. Apparently he was toddling in her garden (he's 17 months) fell over and banged his head on the patio. He's fine, he just had a large bump on his head.
MIL is mortified - she got DH to ring me up so she could apologise.
I told her not to worry - it's the first time he bumped his head, it won't be the last.
Ain't she sweet?