I believe in "when its meant to be it will be". It will happen when its supposed to. Don't think too much about it and don't put so much pressure on yourself or your hubby. Enjoy sex and let go and let god. It will happen when you least expect it or when you stop trying. Just let it happen naturally. Let go and let God girl!!
I have the same issue I too kept testing like I was supposed to and each one said no and this is going to be me and my husbands first and they are expensive to buy also, so I'm thinking just going old school and just keep going for it