i have a question

pretty girl • Trying to concieve for three years && normal periods. Any day now lol

last month i came on my period june 25th. this month glow predicted my period to come yesterday and when i touched the pink button that says "my period is late" it predicted that it would come tomorrow. my cycles are normally 28-29 days and glow always predicted it right so am i late ? should i wait to test ?