I cannot give advice on what food to feed.
I am posting as someone I knew did similiar to yourself. Her vet treated the dog with Vitamin K( reverses the affects of aspirin re blood clotting) Due to the Haemorrhage her dog's Pottasium and Sodium levels were low so supplements were given.
Her dog made a full recovery, but it did not happen overnight.
Is your vet treating your dog with anything