Hello.Welcome to healthcare Magic.
Thanks for the query.
Yes the reason for your pelvic pain
i suggest is endometrial thickening.
The incidence of pelvic pain by endometriosis
And in such cases sonography
and imaging is done to find the stages of thickening and the methodology for treatment adopted,
which may be
Harmonal and drug induced treatment in mild stages of endometriosis .
Surgical method in advanced severe cases of endometriosis.
Endometriosis a gynecological medical condition in which the recurrent pelvic pain is the major symptom and in your case the thickening of endometrium is 20 mm and follicular collapsing .So i would suggest for ultrasound
and further treatment shall be done.
Hope good health for you.
Feel free to ask for further advice.
Dr Shilpi Gupta