I don't see a problem with having a single thread. Some people start a new thread every time they go to the bathroom - is that "better"?? I dont think so. The site maximun is 100 pages. Then you must restart.
I'm glad to hear your mum started talking again, such as it is. Now if h can calm his end down a little! And I wouldn't worry about being able to get in to see a doctor post partum - you and baby are the most fragile members of our society at that point, no? Unless you're the type to have the baby and then go back to working in the fields