(1) No, you have to wait for him for 22 weeks.

(2) And his full 22 weeks should be calculated according to the Gregorian calendar, that is, it should generally be on September 29th, 2009. However, if his date of birth is registered in the household registration book as August 29th of the lunar calendar, it will be August 29th, 2009, subject to the age registered in the household registration book.

2. "What is the legal age of marriage for Miao people?" : still 22 weeks.

3. Your boyfriend is a Miao: there may be a care policy for giving birth to a second child, but the legal age for marriage has not been taken care of. Whether to take care of childbirth and what the policy is, please check the slogan of family planning regulations in the province where your boyfriend is located.