Im beginning a Mental Health Nursing course and worried about scars left from self harm?

Ive had a uniform fitting and i know they are short sleeved. I am emotionally stable (the occupational health made sure of this by writing to my GP) I self harmed last about 2 years ago but i have an arm full of scars which im often quite reluctant to show around strangers.

I dont want this holding me back and i will not allow it. But i am worried about the reactions of other students on my course and colleagues as well as the other allied health professions i will be working with.

I dont know how to deal with it and i know ill be stuck for words when asked (as well as feeling ashamed)

If anyone has experience on this it would be nice to know how anyone coped and the reactions.

Thank you all

(Im located in the UK)