Feeling unusual

I am on day 1 missed period today and my test is BFN. I am not stressed up about having a baby because I want to take it naturally. I am taking care of my diet and lifestyle in order to achieve a healthier body to conceive someday. But last night was scary. I had a nightmare of someone jumping down from the roof and landed right infront of me. I woke up trying to vomit but nothing came out. Went back to sleep after but dont remember was the vomitting happened before the dream or after. Did anyone else experience something similiar?