Normal they normally lie about for a while next day usually fine. You can give aspirin dissolved in water to goats as pain killer, for kids 1-2 tablets up to 3 times a day. (Adults 6 tablets 3x a day.) Depending on when your vet gave painkillers and what, they will last eg. loxicom 2 days before further dose. So probably no need to give anymore pain relief but if you think the kid does need more consult your vet first.