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.
However, this condition is particularly found to be common in the elderly. This condition can lead to memory problems, depression, irritability or an increased risk of heart disease. Medical cannabis can be a very beneficial and efficient alternative treatment option for patients who suffer greatly from insomnia.