Help Water is leaking from my left nostril when I bend down?

So yesterday I dropped my iPhone on the floor and I bend down to grab it. But this water like fluid started dripping down from my left nostril only. I thought it was snot so I cleaned up. But through that day it kept happening and I got a little scared when I did some research and people are saying it could be brain fluid leaking and stuff like that. It's been happening for 2 days and I'm scared. Also my left nostril hurts when the water leaks. My right nostril is absolutely fine.

You're okay. You need to have a brain before you could be leaking brain fluid.

None of us on here are doctors.

Make an appointment to the doctor immediately, if it starts to get to hurtful, or serious, go to the emergency room.

No your brain is not leaking. That is fluid in your sinuses on one side. You probably have a cold or infection, or you have been swimming.
I get that when I do a lot of swimming and diving. Water gets into the sinus cavities and I just lean forward to drain the water out.
It is not serious.