I have ET, diagnosed about 5 years ago, I have been on HU, also aspirin, for around 3 years. I have had ongoing pain under my left ribs for around 12 months. I had an ultrasound scan and the doctor said everything, including my spleen, was normal. However some days I have this pain most of the day others it is on and off. My GP says it must be muscular, but surely not for this length of time? Also that it could be pain from my gall stones/bladder mirrored on the other side???? Sometimes it seems to spread a few inches below my ribs, other times just under the ribs, sometimes it feels like "stitch" other times just an ache. Is it just me or does anyone else get it?