The mushroom is symbolic of higher consciousness. That's what we've been talking about. A shift of consciousness to a higher level.
In some cultures, taking the sacred mushroom raises their consciousness. We all know that raising our consciousness is not as easy as it is talking about it. It takes discipline, practice, meditation, right living, etc. It's not easy, but it can be done with effort.
Sometimes having another like minded person to work with you is very helpful. Group work can build energy to assist us in raising our vibration and level of consciousness. Where is your group or mentor? A new teacher may be coming to you.
The Pale Horse is the Card of Fear, especially physical fear.
Get your feet back down on the ground and stabilize. I'll not let fear rule me is your mantra.
You are loved and blessed.