Feeling lost. Help

So af was the 24 to the 29. I have been taken opk since and had bfn. I'm going to same taken them Mother's Day. Should I take pregnancy test if I am still not ovulating or wait? I have only been trying to make baby number 3 since Friday. I have only have two months to try before my baby maker aka husband leaves for deployment. Everyone around us wants this just as bad as we do. Our two other kids want a baby too. I need some to talk about this and get advice from too. Any ladies what to help me out.