i would recommend getting checked out by a physio who specialises in the area - if you're in Aus you can look at the Australian Physiotherapy Association website and look up physios in your area who specialise in women's health/continence. In my experience, obs generally are focussed on getting bub out & the immediate health of everyone. Physio's have much more experience with managing the longer-term consequences of damage in this area and will factor that in to your recommendation.

I agree that GP's don't know as much about the area - I've heard of on GP saying the only option was surgery for a mild prolapse, which seems crazy, considering I can manage a moderate prolapse and certainly don't need surgery. Your treatment options for prolapse are also different during pregnancy as opposed to after, and a physio can help you with that. Plus as Deltadawn said, prolapses typically do improve. You just want to be informed so you don't risk causing permanent damage - also depends on whether you want more kids after this one too.

GL!