Can't exchange shorts

<p>Hi i came to the clearwater H&M to exchange the shorts that i purched about a mintge ago and was told to make sure that i bring my recceipt should i need to exchange the shorts as i am from mertenity and not sure what my size is as i exchange the guy so he say he is the manger says that they cant exchange then for me as the due date has passed my question is the s****t are still resaleble and i have not touched them ever since the date i got rhem so what must i do with the shorts and im sure the is a way if me getting them changed </p>