The IRS has not been processing mailed returns for some time. Returns are sitting in trailers near processing centers unopened. It would not do any good to mail another return that gets added to the stack. You will not be able to track the status until the IRS opens your return and begins processing it. They have not said how long it will take them to catch up with the stacks of unprocessed returns.
Once the start processing your return, you can track the status using the IRS tracking web site: https://www.irs.gov/refunds
No one at the IRS would be able to answer any questions about it until they start processing it.
See these Q&As about the process: https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions