what to do now? haven't received "accept" confirmation after 7 days

I filed my federal tax on April 2, and it's been 7 days and I have not received an "accept" confirmation: status remains "queued for transmission". There's not much time left before the April 18 deadline. What should I do?

 

1. wait and make my tax payment online on April 18?

2. file again via USPS and attach a check?

3. nothing?

 

Thanks!