What Do It Mean When You Have A Headache Nauseated What Does It Mean When You Have The Nauseated/nervous Feeling In Your Stomach And It Won't Go Away?

What does it mean when you have the nauseated/nervous feeling in your stomach and it won't go away? - what do it mean when you have a headache nauseated

I did not leave the nausea, nervousness in my stomach and the whole day, and its importance in the past week and a half. In addition, I have a headache, flushing head and Swimmy. When I go to bed at night it gets worse, I get heartburn and hot flushes are more frequent, and my stomach just feels more fun. I missed my last period and I have had 2 pregnancy tests about 1-2 weeks, both with negative results. What should I do?