It's been 21 days and refund still processing with no bars, still have 152 code. What should I do? People say I should call but I don't want to create anymore delays

[WillK]

The IRS recommends that after 21 days from when your return was accepted to call the IRS and speak to a tax representative. Calling will not create a delay in your refund, so do not worry about that. 

The IRS issues most refunds in less than 21 days, although some require additional time. You should only call if it has been:

• 21 days or more since you e-filed
• 6 weeks or more since you mailed your return, or when
• "Where's My Refund" tells you to contact the IRS

Do a 2019 Paycheck Checkup and adjust your withholding with your employer now to make sure your withholding is right for next year.