Keep in mind as we get further into pregnancy everything continues to shift including our spine and our internal center of gravity. Pelvic/hip pain spinal pain rib cage tightness difficulty breathing can all be very common symptoms as baby gets bigger... I'm 26&5 and it doesn't water if I work or am off for the day I am constantly sore and feel like I have a boa constrictor around my chest but it's normal
I'm 23weeks+1 and its the first time its happened
I get sharp pains/spasms often. Or i did earlier on. How far along are you? I believed mine to mostly be related to just things moving around and stretching in there.. joints muscles and things.. plus baby is taking a lot of nutrients which means your own muscles may not be getting what they need as well.
Depends on how far along you are in what it might be