Good idea to get the scan done in Spain as it sounds like a strange thing for the doctor to be worried about in peri.
I was over a year post meno when I first asked for HRT. The GP gave me Evorel Conti, it made me bleed so they changed brands of conti a few times but I bled on all of them.
Stopped HRT and no more bleeding, started it, bled again. My mum had been exactly the same.
I wasn't referred because even if you are post meno they allow bleeding during the first six months of any treatment and I didn't try any single HRT for as long as six months, I couldn't convince myself to continue with the mindfrick they seem to all create.
Fast forward and I got tibolone, unlike HRT it actually made me feel better not worse. (Some doctors call it HRT while others will eat your face off for calling it that.)
I stayed on tibolone for eight months and the bleeding didn't alter (five days once a month like a period) so I was referred to gynae for a scan and taken off tibolone.
About 4 months later I finally got a quick scan under the 2WeekWait (is the name for irony?) and the all clear. No follow up except the gynae told me I could have any HRT I like.
So once again I asked for tridestra and again my GP said no
These days I'm still bleeding each month on tibolone, three years post meno and it's all fine apparently.
Except now I'm red flag for CRC, booked for a colonoscopy in four weeks time, already waited two, again under 2WeekWait, lol, always something to worry about.
You'll get better care in Spain.