On the face of it, there isn't too much to worry about.
You need a medical assessment, but this could affect your licence to fly.
Sounds like 1 of a few things have happened.
1) you've blown thick snot into the ear drum and stopped it vibrating (likely) drink a load of water and it will get better.
2) you've bust an ear drum. (less likely)
3)something more obscure (unlikely)
you need to talk to someone qualified. They can listen to your symptoms in more detail.