I keep taking tests and I feel like I just have line eye. I was suppose to start my period the 31st of May acording to my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a>. I am so irritable, have had some cramping for the past three days,on and off, and a horrible lower back ache. I feel like i see a vvvvfl but we are TTC, so I feel like I'm seeing things! Any opinions????