Am I allowed on the counter?

Honesty • Engaged with our miracle daughter after being told I could not get pregnant.
I'm not very big yet and I don't think I've lost any balance yet, but every time I climb up on the counter or a chair to reach something my SO gets upset with me and makes me get down. We've been going back and forth on it for a long time and couldn't find any answers online. Is it okay for me to climb up on the counter or stand on a chair?