Desogestrel – ok to take if I have thrombosis?

Patient: I am a 26 year old, non-smoking, female. I have just been diagnosed with thrombosis so I have had to stop my combined contraceptive pill (Eleanor) and start on the mini-pill. My gynaecologist prescribed me desogestrel and my pharmacist gave me Lueva. I noticed on the instructions that is says ‘ do not take if you have thrombosis’, so now I am a bit confused. My gynaecologist ensures me it’s fine but I would like a second-opinion/ explanation as to why it says that in the instructions. I am also taking Xaralto and wearing compression stockings for the thrombosis.Many thanks,Acacia