I got mine 1 week ago today and I’m the same as you, hate needles! Lol when I went I got taken down to theatre in as bed from my room and went in to anesthesia room and was absolutely terrified n started to cry a bit while getting all the electrode things stuck to me for monitoring heart rate and they asked me if I would prefer to be put to sleep with gas and they would put the needle in when I was under so I went for that
1 and a half deep breaths and I was out! Next thing I wake up from what felt like the best sleep ever lol was in a fair bit of pain so they gave me morphine and took me back up to room to recover. I know a lot of people have problems with nausea after a general anesthetic but for me only problem was a reallllyy dry mouth so eating was really difficult lol hope this helps! Xx