Should I Have An Endoscopy?

HI!

Earlier this year my sister was diagnosed with Celiac after she presented with fairly typical symptoms (daily diarrhea, bloating, abdominal pain).

After her diagnoses I asked to be tested as well. I just found out today my blood test was positive and my physician told me that given my family history and the blood test she did not think a endoscopy/biopsy was necessary. However she didn't seem too knowledgeable about the condition because she said I would "probably benefit from going on a gluten free diet" whereas my research seems to indicate if you have Celiac, going gluten free is not optional.

I do have some atypical symptoms including missed menstruation (previously attributed to PCOS, although I am second guessing that diagnoses), constipation, occasional (but more than normal) abdominal pain (mild-moderate).

Bottom line: my parents think I should get the endoscopy like my sister did to confirm. Do you think this is necessary/advisable?

thanks!