I feel that having second thoughts is very natural. I am fortunate that my Doctor here is 110% supportive! She will be doing my follow up care here when I get back. She reassured me, that on the off chance that complications arise, she has folks here who she will refer me to. My surgery is scheduled for June 2nd in Cabo and I am so excited! I feel confident about my decision due to the wonderful people I have cheering me on...my Doctor included!
If you're not comfortable talking about it with your Dr, or are worried about her reaction, why don't you "test" her at your next visit. Say you have a "friend, niece, nephew, etc" going to Mexico for surgery and ask her for her thoughts. You will know quickly, and if she is positive, just be honest and say..."well I have something to tell you but wasn't sure how you felt about it". Or if it's all negative, maybe you need to find a different Dr that cares more about you helping yourself get healthy rather than where you choose to have surgery.
Best of luck!!!