Recent onset acute stuttering

Recent onset acute stuttering 2 days ago I started stuttering very badly out of nowhere. This program that I go to had to take me to the ER. Nothing seemed to be wrong, but they are still searching. Stuttering has already affected my self confidence a lot. I feel like know people are going to do easy jabs at me. At this point I don't even like talking anymore. Did this happen to anyone else? Also does anyone have any tips on getting use to stuttering and being more self confident? Thanks.