Yesterday when i was sitting in the car i noticed this feeling in my lower left stomach side. It feels like a tight feeling and as if something heavy like a mass of something is in there (no pain) and the only urge i have is to walk or stretch it out.. it went away after i walked out of the car and up some stairs.And it just came back today while sitting in bed. I tried walking around again but it doesn't seem to fade like yesterday. I do have GERD but i don't think thats causing it :/

Anyone of any ideas of what it could be? i'm thinking of seeing my doctor if it doesn't go away.