Could this just be a stitch?
I am nearly 37 weeks, and since about 3pm (not long after eating a small microwave pizza) I have had the most painful stitch.
It feels identical to when I have had a stitch doing exercise: it is just inside my upper ribcage, at the tight hand side, front to back. Was almost in tears when walking, it was that bad. Feels ok when I'm laid on the sofa.
It is just a stitch, right?