Ovulation help!

MariJo • 29 year old with a 9 yr old son from a previous relationship. Newly wed in the summer of 2014, ttc another little one!
So Glow has been telling me for months now that I'm fertile the first day after my period, and that my most fertile day is 4 days after my period. I picked up an ovulation test today and the directions told me count from the first day of bleeding and then test for ovulation on the 10th day. I'm so confused on why glow always tells me different. 
So my question is, have any of you ladies had this problem? And as far as ovulation tests, have you gotten preggers quicker after using them? My husband and I have been trying for 7 months now, and he's thinking something is wrong with his sperm.