Ok so my fiance and I have been trying for almost six months now. I got my period on the 3rd of this month. Glow said that I was fertile the week of the 20th. My fiance and I have been trying. I have been havin severe cramping in my lower stomach, heart burn, back pain, and breast pain. Could I be or is it too early for all that. I'm more concerned of the cramping. It's constant.