Feeling guilty :/

Last night baby girl nursed for a good 3 hours before falling asleep. I'm pretty good about getting up and feeding her every couple hours and she wakes me up when she's hungry. Well she woke me up earlier and I started talking to her and was so tired that I promptly fell back asleep before feeding her. I feel so bad about it. Please tell me I'm not the only one to have done this :/ shes 2 weeks tomorrow