Honestly, I've had this happen way too many times to count. Its alright to feel these but it's not a reflection of you, you just need to not care and focus on yourself. I'm so sorry that's happened to you, glad it's not happening as much now. All you can really do is try to use your tools, tell people you have a speech impediment and try not to quit talking to people because you never know if the people who accept you are out there if you don't try :) I hope this helped you!