Any breast change does need to be checked out & usually it’s the GP that refers. I have seen here that some ladies have been referred by a nurse practitioner or equivalent so maybe check if this is possible.
In any event, do get it checked out, GPs are used to dealing with this sort of thing & male GPs will have a chaperone for any breast examination. However, GPs may also refer without examination if a breast clinic referral is clearly indicated.
Maybe take someone with you, if it makes you feel better.