Hmmm, Not good
Did you log the flights? If not, don't....but I'm guessing that you already did.
If it comes to the attention of the FAA, they may suspend your certificate. If it doesn't come to thier attention, no problem.
One word of advice, you may be tempted to "fix" your logbook somehow. Be very careful. If the FAA believes that you have falsified your logbook, they will revoke your certificate. In case you're not familiar with the distinction between "suspend" and "revoke" suspend just means that they take it away for a little while, 5 days, 15 days, 30 days, depending on the violation. Revoke means they take it away and don't give it back. It would be a bad deal to get it revoked because you were trying to avoid a suspension.
you could take several approaches:
1) You might just leave it alone and hope that it will never come to the attention ofhte FAA. Probably it won't, unless you come to the attention of the FAA in some other way, like a violation or an incident or accident.
2) *Lose* your logbook and start a new one, starting with the BFR that you are about to get, and make a notation that you are including 130 hours from your lost logbook. Or, you could reconstruct your *lost* logbook, going back to your instructors and having them sign any endorsements that you may have received. Obviously the reconstructed logbook wouldn't include any incriminating flights.
sorry, wish I had better news