When should I take a pregnancy test


So according to the <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a>, I’m 4 days late. But I just started having my period again after I had a baby in January so there’s not much data to go off of. It has been 29 days since my last period. Would it be too soon to take one now? Thanks!

UPDATE: I got a BFP!!!!