What happens if I fail boot camp?

I got a ship date of Feb 14th... Two months after I swore in. I wasn't ready for it to be so soon honestly. The mile is no problem for me. I can at least run, but I cannot do a single push-up or sit-up. Terrible, I know. So my question is, will I completely fail out and not be able to join if I don't pass the last PT? Will I be able to do push-ups and sit-ups while in boot camp? And what do you guys recommend I do to get to that point in the next 5 weeks? Thanks!