google stuttertalk. link worked for me. As for the conference, I dont know why you cant go or where you are with your speech, but if you ever feel lost or are at the end of your rope, you must go there. You already should absolutely go so as not to waste time missing out on such important information and experiences, but it'll be there. The only reason I think to be perceived as weak is if you feel weak because of your stutter. i know people who are totally comfortable stuttering so when they take a while on a word, they feel fine. The listener thus feels fine too. They dont know think about stuttering or have a lot of interactions so they dont know how to feel. They look to us. If we are fine with it, so will they. But you sound like a semi-covert stutterer so that's a big jump and a long journey. Just know there are options beyond fluency. I think fluency is a siren trap that we will pull us down rather than give us freedom, because disfluency isn't the issue.