Trying.... Need some encouragement

My husband and I got married in February. It's both our second marriage. I have a son who's 4. My husband doesn't have any children. Right now I feel like the only person in the world that wants this more than anything. We both want to be pregnant so bad. My husband wants a child of his own more than anything. He loves my son so much and I feel so blessed. Trying so hard. Period started today. Anyone have any encouragement or advice on how to make this happen? I feel soooo defeated and depressed. We've only been trying since June but it feels like it's been years!