Never Used to stutter. Now I stutter around 5-10 times a week

Never Used to stutter. Now I stutter around 5-10 times a week I have noticed this at work, with colleagues and with superiors. It’s like my brain can’t keep up in those moments. Maybe I’m tired? Drained? There has been a lot going on at work as we are understaffed and I have been napping a lot. I still have energy during work and when working out at the gym but once my obligations for the day are done I feel done and usually just eat, nap and watch tv. And then I still get 8h of sleep at night. Or maybe it’s something else?