Feel lonely

Lindsay
Sorry for the long message.
We've had three mcs in total and have a gorgeous three year old son. 
My last mc was an early one last month. I took a test a day before my period and it came back with a strong line. My husband thinks I should've waited until after I was late because of what happened the month before but I couldn't hold out.
I was told just three months ago that the only way I was likely to get pregnant was though egg donation due to fertility issues.
My husband has been so supportive throughout everyhthing and was upset when we heard we would be unlikely to conceive naturally. Now though he just seems really negative about this pregnancy and acts like we are just going to lose this one too. He keeps saying I should've waited to test and if we get to that stage when we are talking about ultrasounds. 
I'm nervous so much so that I'm struggling to sleep but I'm also excited but he just seems so pessimistic. It upsets me