Aw Andy - I'm so sorry your are having such a bad day. :(
I think it is a very good idea to go to your doc to get a referral. I really hope the wait time isn't too long. I know what it's like to wait in pain. It's such a shame that you are not able to use your holidays to have fun, but I'm glad you are able to take some time to look after yourself. Push as hard as you can to see a specialist as soon as possible. Many of us here had to throw a few fits with our GPs and other docs. I know it's exhausting living with pain and the ups and downs of a fissure, but don't give up! You are entitled to timely and proper treatment and you will get better and get your life back.