Chances of catching covid. 5-10 day.

I went to have a covid test 5 days ago as i had certain symptoms. That day, i was put in a hospital ward that had all others like me who had symptoms and were admitted after the test. Next day, my test results came as negative. However, i did spent 1 day in that ward. On the discharge slip, doctors had asked me to be in 10 days isolation even though my test report came as negative. I wanted to ask are there good chances of getting covid by staying in a covid dedicated ward of the hospital for one day. I did wear a surgical mask the whole time. After coming back, i also changed my clothes but didn't bath as i was having fever. Its the 5th day today and i am little scared as i read that most patients get covid symptoms from 5-10 day.