Half + half - ???

Angel • Married have a 10 yr old son and a 2 yr old son have had 4 miscarriages two before the birth of youngest son and two after one at 5 months 1 at 6 weeks 1 at 9 weeks an 1 on 5.24.15 at 8 weeks TTC soon
I'm so confused... Going make a Dr appt