I need advice. I went Scuba Diving last week and cannot now unblock my ears.

It’s not the first time I’ve been. This time I couldn’t get the pressure equalled in my left ear so remained at the 5–6 metre level (where I felt comfortable).
The right ears is just about fine but the left is constantly blocked.
The gross bit is that when I wake my left nostril is blocked and when I clear it it comes out a horrible orange colour!