Seasonal stuttering

Seasonal stuttering I've noticed that I stutter severely from April to July and the rest of the months, it is better. It has happened in exactly the same pattern for the last 3 years that I believe there's something triggering this. Has this happened to anyone and how did you get rid of it? I'm asking for medical solutions or something. Please don't say 'take a deep breath, or talk slowly.' My family is there for that and it also doesn't work.