Fraudulent enlistment- Am I in deep water?

A week ago, I was filling out my medical history with my recruiter. He noticed that I omitted to check ‘yes’ on a box that implied I had ever broken a bone. This was inconsistent with what I had told him prior- That I had broken my arm once, when I was four years old. I wasn’t even trying to hide anything, I guess I was just going too fast and not really assessing the questions with due seriousness. He told me that was fine, but I need to keep my story straight or it’s his job in danger. So I subsequently also denied having ever gone to the emergency room, because this comes at odds with the narrative that I’ve never broken a bone or anything of the sort.

Yesterday was my first time at MEPS. Tons of paperwork, and I kept my story straight. I am now in the delayed entry program, with the black cloud of fraudulent enlistment hanging over my head. I guess I didn’t understand that this was a chargeable offense. I recognize that breaking an arm at a very young age isn’t a disqualifying thing under normal circumstances, but can it cause me trouble now? If it ever comes back to bite me, can claim I forgot? Like I said, I was only four years old at the time.

Does anyone have any advice? What are the chances that anyone will ever notice this discrepancy in my records? I hate to kickoff my military career this way. I wish I could just go back and fill in my medical history the right way.