Hello and thanks for posting,

Unfortunately, I can't provide you with a clear answer about this. I can appreciate the thought of them being connected, but most of the time these sort of things are not related. 

On balance of overall probability, it is far more likely to be a muscular skeletal issue, such as back discs affecting your back or pelvis, (Sacro iliac joint) than a related womb issue.

These type of problems are more common as we get older. Shooting pains do suggest a back or pelvis issue, which is maybe what the physiotherapist may have said. Ask your GP if they can try to bring your hospital appointment forward, or if they can request any scans or x rays of your back and pelvis. 

Kind regards,

Vanda