Ovulation test + for 3 weeks??

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
Usually only get 2 to 3 positive mind have use the same test for seven months end also had a friend test same time as me to make sure they were defective what is going on