When you have sacroiliac joint pain you'll usually feel muscle spasms or tightness in one or both of your buttocks muscles.
The pain that you feel with sacroiliac joint pain is a deep pain that also happens in the lower back and usually goes away with activity.
Tylenol or ibuprofen can help with relieving sacroiliac joint pain and if you still experience pain after taking the medication you should see a doctor.