Mine is not always physically obvious (no wheelchair) but people have said things (sometimes not very nice) when I’ve taken quite a while to walk or in some cases sit down to prevent myself from collapsing, using public toilets has always taken longer than the average non disabled person and needing assistance carrying large/heavy items. It can be frustrating and upsetting but over the years Iv just learnt to let it go. Of course I do always wish things could be different and it does get me down.