I'd advise spending at least a month or two, if not 6, in both Countries just to see how you fare, before making a final move. Thai women are similar to women in most countries, they want love, but security is very important to them. Scammers of all nationalities exist.
I paid 50 baht for my medical clearance from a clinic in Thailand. If you ever have doubts or questions, simply ask about it here, or similar expat forums 🙏