It is generally thought that the menstural cycle shouldn't start until the body is ready to be fertile again. IF you are healing something and have adrenal fatigue ( and the hormones that tend to go along with it ) it makes sense that it wouldn't return. It is actually unhealthy to get it back too soon...your body is trying to rebuild it's stores. Think of hte implications...if you are menstruating you are fertile. If you are fertile you could get pregnant. A smart body wouldn't allow that to happen until it was ready to support a healthy pregnancy.
