lolx man it takes some time before you get it going..
This happens coz its the first time you pushing urself hard,your body is getting used to , to it..it will take some time about 2 weeks to get setup
Dont worry nothing is been damaged,i know when u will do your biscep and tricep exercise you will cramp ur whole body and wont even able to move ur arm and would hurt your elbow
Suggestion: Dont over do it..You know how much you can bear,dont hear to the coach there..he will tell you to do 20 reps on one game..which is not possible for a biggener,so make it easy..divide the time for every game..Coz you know by doing that you wont get arnolds biscep in a month or so..
Its all about giving time and having good diet..Just keep it going,and yes dont forget to consult with our member here i.e Abobobilly,hes a gamer too
One more thing is that , make sure that what ever exercise you do , it should be done on right angles,especially when you are doing the biceps one make sure that you raise the dumbles do right height and with right angle..