Forests are essential for life on earth. Three hundred million people worldwide live in forests and 1.6 billion depend on them for their livelihoods. Forests also provide habitat for a vast array of plants and animals, many of which are still undiscovered. They protect our watersheds.
The other cause is migraine headaches that can affect some women prior to their period following ovulation. Nausea typically accompanies migraines regardless of the cause of the headache. In this case the headaches are caused by the hormonal imbalance and they can be completely debilitating along with the nausea.
Headaches are triggered by the hormonal changes that are happening in your body. They're very common in early pregnancy. The hormone progesterone helps to relax your womb (uterus) and blood vessels in your body, including those in your head and neck. Blood then pounds through these veins, causing headaches. Changes in your blood pressure may trigger tension-type headaches.