Not outside the U.S., but I don't get your question. What difference would it make where you are on the planet regarding using the G4? As long as you can get the supplies for it, you should be fine. And, many pregnant women use the Dex. The company can't provide data on how it acts with frequent hormonal changes, etc. Research projects omitted women from drug studies for many years but the docs still prescribed the studied heart meds to women. Now research must include a representative sample as one part of a robust study. Maybe that will occur with cgm some day.
Would suggest you follow the Dexcom group here on Tudiabetes as well as the sixuntilme blog. You will need help from time to time from other users. Also, I don't know if there is a pregnancy group on here but there probably is. Just search for it.
Thanks for the suggestions. I asked the question because the lady at Medtronic Hong Kong office told me that their CGMS has some frequency settings and if I bought their device in UK for example, it might not work in HK. The "frequency settings" on their machine between US and HK are the same.
it's more a technical question which I'm awaiting for a response from Dexcom.