When to take pt

I was supposed to start my period this morning, and glow is normally accurate for me. Anyway I didn't start my period, and I know i can still get it, it could just be late. But I haven't had any of my usual pre period symptoms this time, like to upset belly, no cramping, no leg pain or back pain for no reason. So how long should I wait for my period before I take a pregnancy test? I've never made it to this stage yet lol my periods are always on time