I was alying in bed on my back, and all of a sudden I felt this weird pain like I was being cut open w/ a knife and/or like a muscle was pulling and tearing.  It felt wird for a little bit, but then it went away.  I feel it know if I lean a little forward, or if I bend down to tie my shoe.

I do labor work and I pulled towards my body and felt it again. The pain ishardly there but it's a little uncomfortable. Id rate my pain on a scale of 1-10  a 1 in a half.

Does anyone know what this is? Its my upper right stomach, right next to the ribs, not touching the ribs though.