Getting tired

Me and my husband had a miscarriage in December I was not far along we actually found out we were pregnant because I was going through the miscarriage and was in a lot of pain. It was a happy accident that we got pregnant but we lost it and we have been ttc ever since. I do everything I should I log everyday I check everything. I am so tired of every month getting the same results. What else can I do to help this along we want another baby so bad. I have a 5yr old son but this will be my husbands first and we are starting to lose hope. Does anyone have any advice for us?! Thank you!