Scanxiety

Hi all
I had a head Ct in dec and thought nothing more of it as it came about from an off the cuff remark about headaches . I assumed these were from ongoing treatment tdm1 and just happened to mention . Anyway when I’m last week for treatment I was given the shock that they had found something on the Ct . It’s very very small and I’ve been told highly treatable if it’s something to worry about . I’ve now to have head mri to find out what it is exactly . To say my anxiety levels are through the roof is a massive understatement !!! Mri may not be for at least 3 weeks yet which is torture . I’m so so upset as am due my last treatment in 2weeks and had dared to get a little excited . Every time this time round that I have gotten to the finish line I’ve been tripped up .
Has anyone had anything similar which turned out to be nothing ?? This is my second breast cancer diagnoses (I was a month off 10yrs clear ,it came back in recon breast in same spot ). Please any advice greatly appreciated . TIA