Bullhead City Blues

I had an earlier post about ttc #4 with my fiancee who is 11 yrs older than myself. I have 3 kids from a previous marriage. Never had a problem getting pregnant. If I looked at a pregnant lady boom I was pregnant too. Well we've been trying for 2 months now and nothing. I think he may have a low sperm count although he does have 2 older kids from a previous marriage as well. I'm feeling really down. This app nailed my period to a tee. I started today as predicted. :( I know I shouldn't stress and should stay positive but it's hard. I really want us to have a family together but I'm not sure it's possible. I have read ways to boost his count but he's set in his ways and thinks I'm being silly. If it's meant to be it'll happen is his usual answer. Although he talks about wanting a little girl and has a name all set. I'm so confused.