I'm seeing a wonderful osteopath who specialises in pregnancy and post natal care - she'll follow me through my pregnancy, post natal and will also follow up my baby too when he/she is born.
I have absolute confidence in her - i'm very strong as I do lots of pilates but there are so many changes to the body during pregnancy that she can help with - and they can also do a lot to help optimise your spine, pelvis, hips for birth.
Good luck. Ring around, find someone with this specialty and be sure you are comfortable with them.
Lolly