I need some advice please my period is due tomorrow but not always on time as I'm a weird person that don't have them every month I'm been having sharp pain left hand side of my belly and been really tried plus clothes getting tighter and me Plus partner been trying for a month and followed the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> and did it the fertile days do I get a pregnant test now or wait?