Feeling Discouraged

Hey everyone. Just wanted to post on here about how discouraged I’m feeling. I’m a mom of 2 little girls (7 and 4). I want so badly to get pregnant with the 3rd one but after a miscarriage and a blight ovum last year I needed to take a break from it all. We started again on January 1st. Is it harder to get pregnant with the 3rd child and at the age of 30? I got pregnant so easily with the other two but this is hitting me hard. Can some please give some words of encouragement and inspiration. Thank you for your time.