Left wondering

I had a transvaginal ultrasound a few days ago after having surprise light bleeding 3 weeks ago. I'm post menopausal, been on hrt 2 years.  GP was concerned about my cervix but lining and cervix were fine. However Ultrasound lady said she saw 2 'simple cysts' on my ovary and I would get an appointment to see the dr.

Instead, Ive been sent an appointment for another ultrasound in 4 months and an appointment with the gynaecologist a week after. They said to 'get a repeat blood test for 'tumour markers' a week before.' 

Ive never had a blood test for tumour markers so this was a shock. Should I have had? I had a blood test but only because of suspicion I was anaemic. I thought a dr would explain the results of the scan but Instead I am waiting another 4 months with no idea what's going on.