Dear friend,
Looks more like a case of spondylo-arthropathy. The sacro-illiac joints , once iinvolved, are difficult to treat. Rest , anti-inflamatories, are the way out. Sometimes, anti-biotics r also required to decrease the inflamation.
So it really takes time. However please don't worry. But the best way is to consult a good rheumatologist who can perform investigations and rule out the arthropathies.
We really need to rule out ankylosing spondylitis in this case as well as pelvic inflamatory diseases.
I hope you understood my concern.
Feel free to discuss more,in case of doubts.
Regards
You are most welcome dear friend.
Thank you so much for helping!
Cheryl :-)