Apparently your PTSD has effected your reading comprehension.
IF you were "just given a rating" from the VA it is documented. Everything after that rating is also documented. If you never had treatment that is easy to show. If you've ever been paid for partial disability (treated or not) that is also easy to discover. If you're claiming to have no disability but ever received a payment based on the "just given rating" you've got a tough climb.
Please take your questions to an actual medical professional. You won't get the answers you need here. And if someone does come along and say "go for it, easy peasy, the past is the past" you could likely end up in a worse position. You have two obvious reasons to go slowly towards the FAA microscope.