Baby fell off changing table

I should have moved her mat to the floor since she has been death rolling every nappy change since she learnt how to roll but today she fell off the table. I never leave her unattended and have my eyes on her always this time I had my hand on her legs and turned my head for a second to grab her wipes and she rolled so quick and fell off and landed on her back on the floor. Thankfully it’s carpet floor (not sure if it makes a difference or not) she cried for a few minutes but settled back quickly with some toys and cuddles. As far as I could see there’s no marks or bruises thank god and she’s showing no signs of abnormality or any concussion symptoms (thank god) she was back to her usual playful self in 10 minutes but the mum guilt is consuming me. I cried way longer than she did and feel awful. anyone else had this happen? My dads a doctor and he examined her and said there was nothing to worry about but I just feel so guilty