Hi and sorry you are worried about this virus. It is rare.
Hantavirus is caused exposure to the deer mouse droppings. The symptoms take about 1-8 weeks to appear.
Early symptoms include fatigue, fever and muscle aches, especially in the large muscle groups—thighs, hips, back, and sometimes shoulders. These symptoms are universal. So if you didn't get those symptoms then you probably didn't get Hanta. The other possible symptoms can be headaches, dizziness, chills, and abdominal problems, such as nausea, vomiting, diarrhea, and abdominal pain. About half of all exposed patients get those.
If you haven't had the muscle issues you probably have something else. If you are still worried see an infectious disease doctor. They can be more helpful than an ER.
After 10 days then you start getting shortness of breath etc. So these are some guidelines. I am not a doctor just a microbiologist and haven't directly seen Hanta patients. Hope you are well by now.