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Hello Marie
Thanks for writing to us with your health concern.
I think you mean Lithotripsy right , not Lipo Trixie ?
The vaginal burning and the pain could be due tot he UTI.
Why are you on antibiotics for UTI, was a recent test done ?
Yes , endometriosis also can cause lower back pain, pain during sex and afterwards.
OC pills might be tried for minor endometriosis, before other hormones or surgery.
You should have a detailed internal gynecological evaluation and a pelvic MRI / ultrasound to diagnose endometriosis, though at times it can be diagnosed only by laparoscopy.
Please do write back with more details, if this workup was done.
Take care.