Bad mom moments

I’m a FTM and my son is 11 days old. In 11 days his head has flopped forward and then I just fell with him in my arms. I completely shielded him and he didn’t even cry or touch the ground so he’s fine but I just feel like I’ve already hurt him and something like that is inevitably going to happen again. It makes me feel like a terrible mother. Am I alone or does this happen to everyone?