Can I get a medical visa extension in Chiang Mai if I'm pregnant and on a high risk pregnancy?

The user, who is 27 weeks pregnant and experiencing a high-risk pregnancy, is seeking information on whether they can obtain a medical visa extension in Chiang Mai or if they must go to Bangkok (Chaengwattana) before their TR visa expires on the 31st. They express concern about their health condition and the challenges of being alone during this time.