One of the responsibilities of your manager is to deal with a lot of this stuff for you. It can be nerve-wrecking as a new grad, but one of the things I would do in your shoes is have a 1-on-1 meeting with your manager as soon as possible and explain what you have said here: what was said in the meeting, what you felt was fair / unfair criticism, that you plan to learn from what was fair, but that you're concerned about the unfair perception they may have of you. Get their advice. Ask them to help do some damage control of your reputation if that's necessary.