Hello! On Sunday, I was taking a shower at around eleven in the morning. During the shower, I began to feel extremely dizzy. I proceeded to get out of the shower but after I did so, my vision began to blackout and I fell to the floor. Immediately after, my head flew back and hit the door and my legs began seizing almost as if I were having a seizure. This whole episode lasted about 15-20 seconds. Since then, two days later, I still feel extremely weak and fatigued. Is this normal?