I am also experiencing similar pain. I am 19 weeks pregnant and my belly button and the area right around my belly button hurt from time to time. It is sometimes constant but other days doesn't hurt much at all. I have been experiencing this for a couple weeks now.
The immune system is intricately connected to the hormonal system and the brain via messenger molecules, so that emotional stress and factors like insomnia have a great influence on its ability to function properly.
Primary Insomnia is not related to any other condition while Secondary Insomnia is a consequence of a different but related condition. Causes of insomnia, which are wide-ranging and often difficult to identify with certainty, can be caused by or comorbid (co-occurring) with the following: 1. Anxiety and Stress