Myelofibrosis

Hi does anyone else have a diagnosis for Myelofibrosis? 

I just wondered if any of you do and how your getting on with it and if your on Ruxolitinib ( Jakavi )  and if you having any symptoms with severe diarrhoea? 
I’ve only been on it 1 week but my stomach is really suffering I thought I’d reach out to you to see how your coping 

thank you