Hi Jbird01
Yes, it feels awful when living a lie and not knowing how to get out of it. I think the first step is to be kind to yourself and to say "we human beings make mistakes" and the important thing is how to get out of it again. I would say you just need to be very honest and tell what has happened. It feels that fullfilling peoples expectations as a good student is sometimes really hard and one has the feeling of disappointing the others. Just tell them and you will feel very released.
All the best!