Are you able to call first thing in the morning for a first come first served appointment ? At my doctor's surgery , if you call at 8 am they will give you an appointment for that day , otherwise you have to wait two weeks approximately. This type of appointment is different from the emergency appointments where they squeeze you in.
I sympathise with you about having trouble with the receptionists though as no matter what surgery it is , they do seem to be like Pit Bulls and I wonder if this is a pre requisite for the job :- )
In saying that though , I suppose you can see their point. They have a difficult job trying to weed out the hypochondriacs from the genuine patients to try to ease the workload of the often over stretched GPs. Although it is so damn annoying when they try to diagnose you over the telephone and tell you that it doesn't seem serious. I never bother a doctor from one day to the next and almost have to be dragged kicking and screaming but when it comes to my kids , that's a different matter. I had this problem last year with my three year old daughter whom I knew was ill and it wasn't just a bug. I had to haggle with the receptionist to even be seen and when she refused I took my daughter to the surgery and demanded that she be seen. I was told that I would have to wait as I didn't have an appointment and after my daughter had rushed to the toilet to be sick four times , a doctor who was passing told me to bring her straight through. She collapsed in the room and had to be taken to hospital. Thankfully she is okay but it just goes to show you that receptionists should be wary when trying to diagnose - especially when it comes to children - and you should never underestimate the knowledge a parent has when knowing when their child is ill. As has been said , drink plenty of fluids , wrap up warmly and I hope that you are better soon x