The Miracle singer got an unpleasant surprise thanks to an errant firework during a recent festival performance.
"Ellie Goulding is giving chic dementor."
The pair presented an award at Saturday's ceremony, where Tom made an awkward remark about Ellie's outfit.
Ellie Goulding’s Tale Of A Dicky Tum During Her Coachella Set And Cat Litter Is Not For The Faint-Hearted
A "poo trap door" also features in this mortifying tale.
"Mum and baby both healthy and happy," the art dealer wrote on Instagram.
The 34-year-old revealed she is 30 weeks along in some glamorous pics.
The singer's wedding was particularly lavish, and took place at York Minster on Saturday.
The awards were handed out at the ceremony in London on Friday night.
The couple have been together for 18 months.