Owies

Birth shouldn't be a problem and it sounds like you have a gentle birth planned which should be helpful. In my experience there was no more pain when up on knees but laying on the side and on my back there was.

I did Belly Dance for Birth and found it good to help my pelvic floor strength but be careful not to overdo it. With yoga I actually found it hard because of some positions having one foot further forward then the other. Pilates was great I found because it encourages more balance with the pelvis. Toward the end of my PG I did most of the workout sitting on the fitball because getting up and down off the floor was too hard.

The physio should help you out with day to day movement strategies, but basically you need to be aware of keeping your knees together when you do everything and also the spines at the back of your pelvis balanced. ie Getting in and out of the car you should put your bum on the seat first and bring your legs in together, instead of stepping one foot in and then your bum down then the other foot in (hope that makes sense) and to get out you swing both feet out first and then stand up. Also never get up off the floor in a one knee kneeling position - bad bad bad! Crawl to a couch and use it to help yourself up and keep your knees together.