Anxiety due to focusing on the worst things

Hello everyone, I just wanted to some way to deal with my brain focusing on the most negative outcome of things. about 5 days ago I was in Mexico and standing under a tree after dusk. I felt a really light thing land on my head, and it was there for about a second before I swept it off and it fell to the ground. I felt it in my hand when I swept it and it felt like a soft cylindrical thing. I didn’t feel a bite or scratch on my head or hand. However, since I have an irrational fear of rabies and it was after dusk, I thought it was a bat since it was dark. The funny thing is I didn’t hear a bat, didn’t see it fly away, or even feel a bite or pain. But since bat bites are soft, I was still scared. I asked my dad to check my head and he didn’t find anything but the spot was a bit itchy, probably from me poking at it. The next day it was a bit redder and the following day it looked like a scratch. Im pretty sure this was me making it worse since I was poking at it often. Now, I KNOW I didn’t see a bat or hear it, yet I’m still scared I’m gonna get rabies from the thing that fell on my head, even though it wasn’t even an animal. I researched bats and learned that they will very rarely even fly near humans, much less run into or even land on them. That helped me but I still find myself having panic attacks that I’m gonna get rabies from the”bat”. Can anyone help with techniques so I can calm myself, because there are times where I feel fine and in control, but then that doubt creeps in that it might of been a bat, even though I never saw or heard it. Thank you all for your help.

Thanks for your help. I’ll definitely check those resources out.