Aiyoh, SPD is really tough lah, I feel for you! A few of my mum friends had it during pregnancy and they swore by physiotherapy sessions specifically for pregnancy, one of them said the pelvic belt from the pharmacy helped her walk without pain, and another one did prenatal exercises with a proper physio who knows about SPD. Definitely check with your doc or OB though, because at 32 weeks they might refer you to a physio who can give you the right exercises and support so you're more comfortable towards delivery, don't tahan the pain alone okay, there's proper help available!