Is it a cause to worry if I mailed my amended return 6 weeks ago and I can't tell if they have received it or not? IRS website isn't helping.

I made the mistake of filing as a dependent this year so I amended to say that I cannot be claimed as a dependent. I also changed my address. It has been six weeks since mailing and the IRS tool to check the status says that they have no information on the return. I am worried that it got lost and I have no way to tell since I cannot reach a real person at the IRS.