So I’ve bought opk’s and I’m confused when you start to test I’m due to have my main day of ovulation in 8 days thanks in advance want to give these a try before going back to the doctor already have two biological children and a 11yr old stepson were wanting one more and we will be complete I’m 28 and would like to be done by the time I’m 30 my husband is 30 this June he doesn’t have a restriction on his age when he wanted to be finished having babies x