Hey
i have major experience with pgp through 2 pregnancies. don't worry it's not forever, and it can get better for periods during pregnancy (it doesn't just necessarily get worse and worse)
Some physios are useless, if yours isn't helping, try a new one. Some can be miraculous. find one that specifically advertises help for pgp.
My tip is that stretching (gently gently, of course!) will relieve pain. You need to do it several times a day. go to youtube and search pgp exercises. The best, safest ones are the stretches you do on the floor (never, ever, ever standing on one leg!)
Also squats to strengthen your bum: you need a strong bum to take the pressure off your hips. Legs shoulder width apart, bend the knees but poke your bum backwards, fold your upper body forwards. gently up and down. again, do this several times a day
wearing a serola belt will help keep your hips supported and can relieve pain too - search one on ebay
usually as soon as you have the baby the pain goes!
hang on in there xx