Discomfort in upper right abdomen while sleeping on right side

[happylife]

Hi there,

When i sleep on my left side i have no issues. But since last 6 months when i sleep on my right side, i feel discomfort (no pain, its a kind of feeling as if something is pressing you mildlly)....as if some extra cloth is kept between my abdomen and the mattress. Have you faced this kind of symptom? if yes do you know the cause for this?

many thanks.