anyone noticed that the OP has gone?
not bloody surprised. usually these threads turn into a bun fight on the leave the bastard front.
so op has done that.
whats left to fight about?
just in case your about OP, i would tell who you trust first and then see how you feel when youve got it "out there", i would certainly tell your family as they will be wondering what the hell is going on anyway and will no doubt want to support you.
as to the rest, that is entirely up to you. you say what ever you feel ok saying to whoever you feel ok saying it to, i would just tell people on a person by person basis, depending on how you feel at the time, who they are, if they being nosey or wanting to genuinely support.
you sound a bloody good judge of character to me - trust yourself.
as for the GUM clinic - go a little further afield, google it, if it were me, i would want to take a pal with me for support, but thats me. You may want to do that alone?
but take support and strength from you family, and your friends. I wouldnt hide the truth from them. the rest you can deal with later.
good luck OP.