Do I really have endometriosis?

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My doc told me I have endo via ultrasound, never got laparoscopy done. Few points

1. I have not a single symptom of endo, no pain, regular cycles

2. The cyst on my right ovary was 6.5cm in 2020 and now in Jan 2023 it was less than 2.5 cm (both detected with ultrasound) can it reduce on its own

3. i am on no medication for endo at all

Please help