Suspected Melanoma - has anyone else been told not to worry despite being fast tracked?

I had a full body check 5 weeks ago with consultant dermatologist who just flagged up my normal AK problem which I have been treating in various areas for nearly six years with Fluracil While treating my leg I felt a large brown patch that has been thete for several years looked slightly different I have no idea  how long it has looked different as it has been checked regularly over 6 years I just went to my GP for reassurance and she has put me on the fast track while telling me she doesnt think its anything to be worried a out She is very young and in training but it has sent me onto a really bad anxiety has any one else been fast tracked whilst being told probably nothing to worry about