Wondering am I pregnant

My peroid is also late by 6 days according to glow (it's hasn't been wrong before)my boobs are sore mild cramping like I'm about to start menstrating and cm is yellow also very dry down there.i took a pregnancy test today (the 6 day mark of being late) and it was negative I'm going to take another one in morning.if negative again should I wait for my period or give it four more days for a blood test or home pregnancy test