I am 14 I weight 124 my height is 5' 1'' and can bench 235 is that to little for my age?

My soccer coach says I need to bulk up to play with the big guys most of them are around 5' 7'' I am 5' 1'' they all bench around 325 when they are my age and weight it really sucks only to bench 235 my teammates call me " weakling " and " Pussy " I dont let it get to me but I was wondering how I can bench more than 235 i am so weak!! My coach says if i dont bench more than 285 in the next month i will be on the bench for the whole soccer season!!!!!