Boxer coughing when playing on the grass

[Baby JC]

Hello,

Its been about a month now, since I had my boxer puppy. For some reason, when you goes on the grass to play..She runs and plays but she starts to chew on the grass and coughs for about 5-10 seconds and thats it...She will not cough no more...Should I be concern? She is my first pet dog..

Thanks