You don't need to call the IRS or be concerned.  Even though you e-filed your return early, the official date for the IRS to start accepting returns is 1/27/2020.  You will have to wait until your return is accepted in order for you to receive a refund.  You could receive your refund within 10 days if you choose direct deposit.  See the following from the IRS for refund information.

2020 Income Tax Refund Chart Shows When You'll Get Your IRS Refund

https://www.cpapracticeadvisor.com/tax-compliance/news/21121511/2020-income-tax-refund-chart-shows-w...