EXTREME pelvic girdle pain

I’m currently 28 weeks with twins and dear lord Jesus my pelvis feels it. I’m in physical therapy once a week and it helps some but as soon as this week hit, it took on a whole new form. I can’t even lay on my left side because when I go to get up, it feels like my pelvis is being ripped apart! And that SUCKS considering I have to pee every 10 min. I have to sleep propped up. Baby’s are both over 2 lbs so that’s 4lbs of baby in my uterus but this is PAINFUL….