Help. Pls. Need some reassurance

Hello!

Try keep this brief. Diagnosed w stage 3 TNBC in 2018. They hit me hard double dose Ac and taxol. Then bilateral mastectomy and 25 rads. Then 2020 bone scan. Just routine follow up. Say mark found. So mri to see more. Then oncologist says 80% sure one met tonpelvis bone. Stage 4. Cat scan to be sure no other mets. It came back clear and didn’t even even show the suspect mark! Appt w radiation dr because that is how my dr said it needs to be treated. So last Friday she tells me she said not convinced it’s a met and wants do biopsy! I have been waiting now a week to hear when that appt and the stress is too much Has anyone ever had mark show and assumption is cancer but then turns out it’s not? What a rollercoaster