I am getting a feeling of fluid running down in my head at top and back and mostly right side  and it remains whole day  and occasionally get pain in whole right face including ears and neck. I started getting these from past 4 days. Before these all started at previous night i suddenly got a very severe and sharp pain something like cracking and could not understand the cause and from next morning i started getting these symptoms. Before 6 months i suffered from health anxiety and panic attacks and now also very worried and tensed about such symptom as i am really stressed thinking about numerous diseases. what it could be???