I worry too much about what other people think.

I worry too much about what other people think. I'm currently a college student and this is my second semester at this college. Last year, my speech was nearly fluent. I did start stuttering more towards the end of the year, but passed it off as "the room is too cold that's why my speech is off" or "I have a exam today & I'm feeling nervous" or if I had a block "- I forgot". However this year, specifically these last two months, my stuttering has gone from 2 to a 7/8 on a 1-10 scale. I'm worried my peers will think I'm doing this on purpose. It's the complete opposite. I don't want to stand out. I've always wanted to just blend in. I even joined a stuttering support group this year and I still worry that they think I'm doing this on purpose. My own mother is insinuating that I'm stuttering on purpose too, so if my own mother thinks that does that mean everyone is thinking the same thing? Any tips on how to stop feeling like this? Have any of y'all felt this too?