I got this <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> when my period started last month and my husband and I decided to try for baby #2. We got pregnant our first month trying. I did have implantation bleeding and had cramps like I was going to get my period then it never came. just some info for those who are curious about symptoms. Tested super faint positive at 4 days past my period due date.