Suggest Treatment For Bleeding From Ears Along With Pain After Using Peroxide

My daughter has blockage in her ears, her doctor did a flush the other day and then told me to put peroxide in her ears every other day and an oil ear drop once a day until she gets into an ENT. Today was the first day I did the peroxide and a chunk of ear wax came out of her ear. I used a tissue to remove it and noticed right away there was blood. I did not use any Qtips, or probe her ear. What can cause that bleeding and should I be worried it? She is complaining about her ears hurting even more since I did the peroxide. I am at a loss until she gets her referral to the ENT.