@shann - FARK!! You've had SUCH a hard time of it .... I can fully understand you NOT wanting to go back onto medication that may open up the wounds again! :(
I hope you get some answers from your new GP
It sounds like you 'may possibly' be post menopausal even tho your ovaries are still there - but blood tests will confirm this. You may have had some done in the past - but not realised it. If your new GP is in the same 'clinic' - they should be able to check ALL your bloods from way back. If you HAVEN'T got them - request a new set of bloods, including them! I used to have them done yearly & that was BEFORE my BC diagnosis!
You are under 50 - so hopefully an MRI would not cost a fortune - or is fully covered ..... ask your Onc specialist that you REALLY REALLY want one, given your difficult history! ..... I am not sure if your GP can order one.
My 'increased protection' from recurrence etc (given my age, surgery, radiation, pathology) is only 1% & I am giving it a go. If I absolutely HATE the side effects - I can go off it with my BS's blessing ..... I started off on Letrozole & had big side effects but after 6 weeks, changed to Exemestane - and have noticed a BIG drop in side effects with the 'same protection'.
Don't be afraid to 'give it a go' - and if it doesn't suit you - ask if there are alternatives for you to try xx