I have pelvic pain too (hip bone falling apart sensation). doing bridges and cat cow poses every day helps to reduce the pain for me. I hold each pose for 10s, repeat 8 times. you can try googling for other pregnancy pelvic pain relief exercises.
It is normal during the third trimister. You can get some tips here: https://www.whattoexpect.com/pregnancy/symptoms-and-solutions/pelvic-discomfort.aspx
I also needs tips on exercise