Post Surgery MRI

Hello, new here. I had a RH for Stage 1b in October 2021 which went well and clear margins. Since then i have attended 3 monthly checkups and all has been well. However after the last one my Dr said all well but wants me to have an MRI to check the whole pelvis, ie what she cant see/feel. My anxiety has gone through the roof as i didnt think scans were a post treatment option for RH in the UK unless something was suspicious. Has anyone else been offered a scan as part of follow up? im 16 months post surgery and hoping its just i have a good Dr who wants to cover everything. Thanks for reading.