Is severe appetite loss a symptom?

My appetite has been so low that I’ll eat as little as 1 small snack or meal a day and sometimes just nothing at all. I’ve went down almost 8 pounds in the last like 10 - 12 days due to feeling so awful and having no appetite at all. Is this a symptom of high blood pressure or should I look into something else? I’ve had my blood pressure measured 3 times across 3 days. 159/98 at the ER, 153/88 2 hours later then 160/90 by a nurse at the gp office 2 days after those measurements. They all said it could just be stress and didn’t attempt to do anything about it