Hi and I'm so very sorry you had this accident. I know it is very scary. I am a microbiologist and have had a couple of similar incidents. I got splashed with a tube of serum in my face (eyes nose and inside my mouth) when I was working in the lab years ago. I also, got stuck by a needle with a positive HIV patient. So for my exposure it was about 1 in 1000 chance of getting HIV from that incident. So it is scary but pretty low. I was tested and came out negative. But yours it is hard to know if you got it in your nose or not. I wouldn't take a chance and I would get tested. You may not have gotten it in your nose like I did. So you may be "luckier" than I was. Did you report it to your work HR or Safety department? You should notify whomever deals with that and/ or tell your supervisor, so you could get tested. If you haven't you should report it immediately. Also, there is a small risk of Hepatitis. Have you been vaccinated wit the Hepatitis B vaccine? Have you had the 3 shots? If so you don't have a risk for that. The risk for Hepatitis is a little higher than HIV if you actually got it in your nose. Since you don't know I would err on the side of caution. See the workman's comp. doctor.
Let me know if you have any questions. It sounds like you are probably okay but you can't assume anything with this since you can't see if the droplet got in your nose. It can be very small.
Regards,
mkh9