Back pain

Last night I suddenly started to get a dull aching where the arch of my back is on both side it would come and go after about an hour I decided I needed to go and get it checked out as I’m only 25 weeks.

So I waited 3 hours to be told I have SPD (symphysis pubis dysfunction)

I have had no other symptoms of this no pain when moving etc.

The back pain has now stopped but I’m worried they may have missed something

Has anyone experienced this?

Is back pain part of SPD ?