How long should I wait to take a test my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says I start tomorrow but it only did that cus I deleted my period when I was really supposed to start. Oh the original day I was supposed to start was the 16th no pains or anything just always in a really bad mood and my bf seems to get on my nerves like if he's someone I really don't like