Maybe you are being too self critical. Not saying people werent laughing at you but we tend to be narrasastic and over analyze the situation. I feel for you though bro. I have countless stuttering stories...job interviews, dates, industry club meetings. My God dude. I got stories. Just keep your head up, love yourself, be kind to yourself and get out there. The worst thing you can do is retreat and isolate yourself. You got alot to offer. Nobody is perfect. We are all unique, different skills etc... Like my mamaw used to say...we're all like snowflakes lol