Could your stuttering be caused by medication? I posted a research paper a few weeks ago that talks about drug induced stuttering. It sounds like you had little to no stutter before, so this gradual but relatively sudden change is weird. (Many of us have stuttered for decades - since we were kids) For example, I feel like Zyrtec (for allergies) makes me stutter more even though I haven't found any reputable research to back this up.