I dropped off my mail-in ballot (MIB ) on May 4. If you've voted by mail, and would like to know if elections officials have received your ballot, you can use this online tool to make sure it was received.
If it shows that your ballot was never received, I'd suggest that you go to your precinct and cast a provisional ballot. If any election official tells attempts to deny you a provisional ballot, demand to speak to the elections office. Do not talk to the party hacks who linger at the polls. Demand that your elections judge makes that call for you. Believe me, you'll be able to vote. Your provisional ballot will count if your MIB was never received.