I think my stutter makes my boss feel uncomfortable...

I think my stutter makes my boss feel uncomfortable... I'm a first year grad student and I think my adviser feels uncomfortable (and sometimes avoids) speaking to me because of my stutter. Whenever I experience a block, she immediately breaks eye contact and looks at the floor, and sometimes she fidgets around with things a little bit as well. I also don't see her speaking with me as much as she speaks to the rest of her students too. Am I overthinking this? Has anyone else here experienced something similar where your boss reacts weirdly to your stutter?