Disclaimer: I am not a doctor or physical therapist and my suggestions for this area/issue are based purely on my personal experience. I recommend you reach out to your healthcare provider and/or physical therapist if you are having lower back pain or pelvic pain and get an accurate diagnosis and suggestions for movements to stabilize and care for this area/issue and ask them if these movements are okay for your specific diagnosis/issues.
This 35 minute Yin Yoga practice for the SI Joint/Sacroiliac Joint was a request from the community. We use the floor to stabilize and care for our lower back and sacroiliac joint bringing more awareness and release to the area. As someone who suffers from SI Joint flareups and pain, I know how difficult it can be to work with this issue and how having a flareup can change your practice. A few suggestions: reach out to a physical therapist for recommended movement/stabilization for this area, rest during an acute flareup and allow the inflammation to subside before continuing your practice, journal or note when/what poses/where/how it flares up or you feel it more and use this to inform your practice (make adjustments or reach out to a yoga/physical therapist for ideas on how to work with this information), include a daily curcumin supplement in your diet to help reduce overall inflammation in the the body, be very mindful of your movement (I will admit that my injury occurred from my overextending and not activating the muscles around this area mindfully), and practice stabilizing/grounding positions/poses to help build more awareness/stability in this area. Move slowly, be mindful, be aware and use whatever props you need to find stability and release. The idea in this practice is not for more flexibility but for some release and body awareness as well as stabilizing poses to practice when you need them. Always use your best judgment and practice self care!