Depression

I've been married to my husband for 8 months. I already have 2 children. He has decided that he would like to try for his first, so we've stopped using protection, but he's never up for sex! He doesn't know that I monitor my period so has no idea when I'm fertile, but this month so far we've been intermate only twice. We've been trying for only 4 months but I'm gutted every time I start, even though I know the odds are against us. Should I just delete this app as being able able to check my records upset me. X