Management of a case of adenomyosis

Medical Case Details:

Patient age 28 yrs, complaining of pain in lower abdomen since one year. At that time usg was done and showed adenomyosis and small 1 cm cyst in one ovary. Some doctor started her on endoreg thinking of endometriosis. Along with it started on tablet Crina (northisterone) in last 10 days every month. She improved in her pain but had irregular spotting in between. She also has a history of using some vibrator over her private parts at the very start of complaint last year. There was no significant finding on local examination. Since 2 months she is continuously having bleeding despite taking continuous progesterone regularly.

Now repeat scan is showing mild adenomyosis, no adnexal cyst, and rest everything normal. Urine analysis normal. Local examination normal. After stopping endoreg and Crina her bleeding stopped after few days but pain restarted.

My question is, what is the probable diagnosis as adenomyosis should not cause this type of pain? And how to proceed with management? Thanks