I'd worry more about the competence of the Thai doctor and their diagnoses.
My advice would be to go back to a western country,and get a real doctor to do the work.
I've encountered 3 total doctor failures in Thailand in the past 10 years.
1. 8 years back my gall bladder needed to be removed or I'd die, it wasn't and I'm fine.
2. 6 years back my 5yo son needed an emergency appendectomy or he'd die, it was constipation.
3. 4 years back I needed prostate surgery, I didn't and it was actually a UTI.
No faith in the competence of Thai doctors.
If I'd had insurance that paid for everything, I'd at best now be missing some body parts, and at worst they would have killed me.