'has there been a time when your gender did not fit with your birth sex'
Confusing question - do they mean gender identity (don't have one) or gender stereotypes (I disagree with these all the time) or gender presentation (I'd say outside of physical characteristics mine is fluid anyway), and sex is mentioned separately, so they don't seem to mean that. Perhaps they mean the gender marker on my documentation? I mean, mistakes have happened in the past, but again, this seems unlikely, because why would my doctor be asking?
'have you ever considered changing your gender'
I thought gender identity (which I don't have) was fixed? And they can't mean gender stereotypes, because that makes no sense in this context, so the best guess is gender presentation. Well.. yes.. I've had different haircuts, my wardrobe holds many outfits... but that seems like a strange thing for a surgery to be asking. Perhaps here they do mean sex, even thought they didn't in the first question - but since that's clearly impossible (and they're doctors, they should know), that doesn't make sense. If it's M/F on my passport, then no, I can clearly say that I've never considered changing it.
'have you considered surgery to change your gender to the gender you feel you should be'
Lets go through the list again - can't be gender identity, because surgery does nothing for that, can't be gender stereotypes because surgery does nothing for that, must, again, be gender presentation - so I suppose - yes? I have considered a breast reduction - weird again to call it just 'gender' though, surely 'appearance' would be more appropriate, and no amount of surgery can change your sex, it can't be that - so again, I'm confused as to what they're actually asking. Can't be the passport question, because surgery has no bearing on that.
In Summary - these questions are unanswerable as they are.