PGP/PSD (Pelvic Girdle Pain/ Pubis Symphysis Dysfunction

Suzana • Youtuber & Mummy - www.youtube.com/getnaildbysuz
Hello!
I'm coming up to 35 weeks on Wednesday and have been suffering with quite severe PSD since about 18 weeks which funnily enough is when I started to feel her moving too!
However from about 33ish weeks or so I haven't got that same intense pain in the pubic area when walking, standing, putting on pants/knickers standing up as I did from 18 weeks onwards...anyone have any ideas as to what may be the relief I'm feeling??
I must mention however my knees are now KILLING me!! Just getting on and off the toilet feels like super strain on my knees!